CY7C4245-15ASC
CY7C4245-15ASC Datasheet
CY7C4425/4205/4215 CY7C4225/4235/4245
| Part | Datasheet |
|---|---|
CY7C4245-15ASC |
CY7C4245-15ASC (pdf) |
| Related Parts | Information |
|---|---|
CY7C4225-15AC |
CY7C4225-15AC |
| PDF Datasheet Preview |
|---|
| CY7C4425/4205/4215 CY7C4225/4235/4245 64, 256, 512, 1K, 2K, 4K x 18 Synchronous FIFOs • High-speed, low-power, first-in first-out FIFO memories • 64 x 18 CY7C4425 • 256 x 18 CY7C4205 • 512 x 18 CY7C4215 • 1K x 18 CY7C4225 • 2K x 18 CY7C4235 • 4K x 18 CY7C4245 • High-speed 100-MHz operation 10 ns read/write cycle time • Low power ICC =45 mA • Fully asynchronous and simultaneous read and write operation • Empty, Full, Half Full, and Programmable Almost Empty/Almost Full status flags • TTL-compatible • Retransmit function • Output Enable OE pin • Independent read and write enable pins • Center power and ground for reduced noise • Supports free-running 50% duty cycle clock inputs • Width Expansion Capability • Depth Expansion Capability • Space saving 64-pin 10x10 TQFP, and 14x14 TQFP • 68-pin PLCC Functional Description The CY7C42X5 are high-speed, low-power, first-in first-out FIFO memories with clocked read and write interfaces. All are 18 bits wide and are pin/functionally compatible to IDT722x5. The CY7C42X5 can be cascaded to increase FIFO depth. Programmable features include Almost Full/Almost Empty flags. These FIFOs provide solutions for a wide variety of data buffering needs, including high-speed data acquisition, multiprocessor interfaces, and communications buffering. These FIFOs have 18-bit input and output ports that are controlled by separate clock and enable signals. The input port is controlled by a free-running clock WCLK and a write enable pin WEN . When WEN is asserted, data is written into the FIFO on the rising edge of the WCLK signal. While WEN is held active, data is continually written into the FIFO on each cycle. The output port is controlled in a similar manner by a free-running read clock RCLK and a read enable pin REN . In addition, the CY7C42X5 have an output enable pin OE . The read and write clocks may be tied together for single-clock operation or the two clocks may be run independently for asynchronous read/write applications. Clock frequencies up to 100 MHz are achievable. Retransmit and Synchronous Almost Full/Almost Empty flag features are available on these devices. Depth expansion is possible using the cascade input WXI, RXI , cascade output WXO, RXO , and First Load FL pins. The WXO and RXO pins are connected to the WXI and RXI pins of the next device, and the WXO and RXO pins of the last device should be connected to the WXI and RXI pins of the first device. The FL pin of the first device is tied to VSS and the FL pin of all the remaining devices should be tied to VCC. The CY7C42X5 provides five status pins. These pins are decoded to determine one of five states Empty, Almost Empty, Half Full, Almost Full, and Full see Table The Half Full flag shares the WXO pin. This flag is valid in the standalone and width-expansion configurations. In the depth expansion, this pin provides the expansion out WXO information that is used to signal the next FIFO when it will be activated. The Empty and Full flags are synchronous, i.e., they change state relative to either the read clock RCLK or the write clock WCLK . When entering or exiting the Empty states, the flag is updated exclusively by the RCLK. The flag denoting Full states is updated exclusively by WCLK. The synchronous flag architecture guarantees that the flags will remain valid from one clock cycle to the next. As mentioned previously, the Almost Empty/Almost Full flags become synchronous if the VCC/SMODE is tied to VSS. All configurations are fabricated using an advanced N-Well CMOS technology. Input ESD protection is greater than 2001V, and latch-up is prevented by the use of guard rings. CY7C4425/4205/4215 CY7C4225/4235/4245 Logic Block Diagram WCLK WRITE CONTROL FL/RT WXI WXO/HF RXI WRITE POINTER RESET LOGIC EXPANSION LOGIC Pin Configurations PLCC Top View D0 17 INPUT REGISTER DUAL PORT RAM ARRAY 64 x 18 256 x 18 512 x 18 1K x 18 2K x 18 4K x 18 FLAG PROGRAM REGISTER FLAG LOGIC READ POINTER FF EF PAF SMODE OUTPUT REGISTER Q0 17 READ CONTROL RCLK Ordering Information 64 x 18 Synchronous FIFO Speed ns Ordering Code 10 CY7C4425-10AC CY7C4425-10ASC CY7C4425-10JC CY7C4425-10AI CY7C4425-10ASI CY7C4425-10JI 15 CY7C4425-15AC CY7C4425-15ASC CY7C4425-15JC CY7C4425-15AI CY7C4425-15ASI CY7C4425-15JI 25 CY7C4425-25AC CY7C4425-25ASC CY7C4425-25JC CY7C4425-25AI CY7C4425-25ASI CY7C4425-25JI 35 CY7C4425-35AC CY7C4425-35ASC CY7C4425-35JC CY7C4425-35AI CY7C4425-35ASI CY7C4425-35JI Package Name A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 Package Type 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier Operating Range Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial CY7C4425/4205/4215 CY7C4225/4235/4245 256 x 18 Synchronous FIFO Speed ns Ordering Code CY7C4205-10AC CY7C4205-10ASC CY7C4205-10JC CY7C4205-10AI CY7C4205-10ASI CY7C4205-10JI CY7C4205-15AC CY7C4205-15ASC CY7C4205-15JC CY7C4205-15AI CY7C4205-15ASI CY7C4205-15JI CY7C4205-25AC CY7C4205-25ASC CY7C4205-25JC CY7C4205-25AI CY7C4205-25ASI CY7C4205-25JI CY7C4205-35AC CY7C4205-35ASC CY7C4205-35JC CY7C4205-35AI CY7C4205-35ASI CY7C4205-35JI Package Name A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 Package Type 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier Operating Range Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial CY7C4425/4205/4215 CY7C4225/4235/4245 512 x 18 Synchronous FIFO Speed ns Ordering Code 10 CY7C4215-10AC CY7C4215-10ASC CY7C4215-10JC CY7C4215-10AI CY7C4215-10ASI CY7C4215-10JI 15 CY7C4215-15AC CY7C4215-15ASC CY7C4215-15JC CY7C4215-15AI CY7C4215-15ASI CY7C4215-15JI 25 CY7C4215-25AC CY7C4215-25ASC CY7C4215-25JC CY7C4215-25AI CY7C4215-25ASI CY7C4215-25JI 35 CY7C4215-35AC CY7C4215-35ASC CY7C4215-35JC CY7C4215-35AI CY7C4215-35ASI CY7C4215-35JI Package Name A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 Package Type 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier Operating Range Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial CY7C4425/4205/4215 CY7C4225/4235/4245 1K x 18 Synchronous FIFO Speed ns Ordering Code CY7C4225-10AC CY7C4225-10ASC CY7C4225-10JC CY7C4225-10AI CY7C4225-10ASI CY7C4225-10JI CY7C4225-15AC CY7C4225-15ASC CY7C4225-15JC CY7C4225-15AI CY7C4225-15ASI CY7C4225-15JI CY7C4225-25AC CY7C4225-25ASC CY7C4225-25JC CY7C4225-25AI CY7C4225-25ASI CY7C4225-25JI CY7C4225-35AC CY7C4225-35ASC CY7C4225-35JC CY7C4225-35AI CY7C4225-35ASI CY7C4225-35JI Package Name A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 Package Type 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier Operating Range Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial CY7C4425/4205/4215 CY7C4225/4235/4245 2K x 18 Synchronous FIFO Speed ns Ordering Code CY7C4235-10AC CY7C4235-10ASC CY7C4235-10JC CY7C4235-10AI CY7C4235-10ASI CY7C4235-10JI CY7C4235-15AC CY7C4235-15ASC CY7C4235-15JC CY7C4235-15AI CY7C4235-15ASI CY7C4235-15JI CY7C4235-25AC CY7C4235-25ASC CY7C4235-25JC CY7C4235-25AI CY7C4235-25ASI CY7C4235-25JI CY7C4235-35AC CY7C4235-35ASC CY7C4235-35JC CY7C4235-35AI CY7C4235-35ASI CY7C4235-35JI Package Name A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 Package Type 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier Operating Range Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial CY7C4425/4205/4215 CY7C4225/4235/4245 4K x 18 Synchronous FIFO Speed ns Ordering Code 10 CY7C4245-10AC CY7C4245-10ASC CY7C4245-10JC CY7C4245-10AI CY7C4245-10ASI CY7C4245-10JI 15 CY7C4245-15AC CY7C4245-15ASC CY7C4245-15JC CY7C4245-15AI CY7C4245-15ASI CY7C4245-15JI 25 CY7C4245-25AC CY7C4245-25ASC CY7C4245-25JC CY7C4245-25AI CY7C4245-25ASI CY7C4245-25JI 35 CY7C4245-35AC CY7C4245-35ASC CY7C4245-35JC CY7C4245-35AI CY7C4245-35ASI CY7C4245-35JI Document # 38-00540 Package Name A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 A65 A64 J81 Package Type 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier 64-Lead 14x14 Thin Quad Flatpack 64-Lead 10x10 Thin Quad Flatpack 68-Lead Plastic Leaded Chip Carrier Operating Range Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial Package Diagrams CY7C4425/4205/4215 CY7C4225/4235/4245 64-Lead Thin Plastic Quad Flat Pack A65 |
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