AT28HC64B-90JI

AT28HC64B-90JI Datasheet

Page Write Cycle Time 10 ms Maximum Standard 2 ms Maximum Option Ref. AT28HC64BF Datasheet

Part	Datasheet
AT28HC64B-90JI	AT28HC64B-90JI (pdf)

Related Parts	Information
AT28HC64B-90TI	AT28HC64B-90TI
AT28HC64B-90SI	AT28HC64B-90SI
AT28HC64B-12SI	AT28HC64B-12SI
AT28HC64B-12PI	AT28HC64B-12PI
AT28HC64B-12JI	AT28HC64B-12JI
AT28HC64B-90PI	AT28HC64B-90PI
AT28HC64B-12TI	AT28HC64B-12TI
AT28HC64B-70PI	AT28HC64B-70PI
AT28HC64B-70SI	AT28HC64B-70SI
AT28HC64B-70TI	AT28HC64B-70TI
AT28HC64B-70JI	AT28HC64B-70JI
AT28HC64B-90PU	AT28HC64B-90PU

PDF Datasheet Preview
• Fast Read Access Time 70 ns • Automatic Page Write Operation Internal Address and Data Latches for 64 Bytes • Fast Write Cycle Times Page Write Cycle Time 10 ms Maximum Standard 2 ms Maximum Option Ref. AT28HC64BF Datasheet 1 to 64-byte Page Write Operation • Low Power Dissipation 40 mA Active Current 100 µA CMOS Standby Current • Hardware and Software Data Protection • DATA Polling and Toggle Bit for End of Write Detection • High Reliability CMOS Technology Endurance 100,000 Cycles Data Retention 10 Years • Single 5 V ±10% Supply • CMOS and TTL Compatible Inputs and Outputs • JEDEC Approved Byte-wide Pinout • Industrial Temperature Ranges • Green Pb/Halide-free Packaging Option 64K 8K x 8 High Speed Parallel EEPROM with Page Write and Software Data Protection The AT28HC64B is a high-performance electrically-erasable and programmable readonly memory EEPROM . Its 64K of memory is organized as 8,192 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 55 ns with power dissipation of just 220 mW. When the device is deselected, the CMOS standby current is less than 100 µA. The AT28HC64B is accessed like a Static RAM for the read or write cycle without the need for external components. The device contains a 64-byte page register to allow writing of up to 64 bytes simultaneously. During a write cycle, the addresses and 1 to 64 bytes of data are internally latched, freeing the address and data bus for other operations. Following the initiation of a write cycle, the device will automatically write the latched data using an internal control timer. The end of a write cycle can be detected by DATA polling of I/O7. Once the end of a write cycle has been detected, a new access for a read or write can begin. Atmel’s AT28HC64B has additional features to ensure high quality and manufacturability. The device utilizes internal error correction for extended endurance and improved data retention characteristics. An optional software data protection mechanism is available to guard against inadvertent writes. The device also includes an extra 64 bytes of EEPROM for device identification or tracking. AT28HC64B Pin Configurations Pin Name A0 - A12 CE OE WE I/O0 - I/O7 NC DC Function Addresses Chip Enable Output Enable Write Enable Data Inputs/Outputs No Connect Don’t Connect 28-lead PDIP/SOIC Top View NC 1 A12 2 A7 3 A6 4 A5 5 A4 6 A3 7 A2 8 A1 9 A0 10 I/O0 11 I/O1 12 I/O2 13 GND 14 28 VCC 27 WE 26 NC 25 A8 24 A9 23 A11 22 OE 21 A10 20 CE 19 I/O7 18 I/O6 17 I/O5 16 I/O4 15 I/O3 32-lead PLCC Top View 4 A7 3 A12 2 NC 1 DC 32 VCC 31 WE 30 NC A6 5 A5 6 A4 7 A3 8 A2 9 A1 10 A0 11 NC 12 I/O0 13 29 A8 28 A9 27 A11 26 NC 25 OE 24 A10 23 CE 22 I/O7 21 I/O6 I/O1 14 I/O2 15 GND 16 DC 17 I/O3 18 I/O4 19 I/O5 20 Note PLCC package pins 1 and 17 are Don’t Connect. 28-lead TSOP Top View OE 1 A11 2 A9 3 A8 4 NC 5 WE 6 VCC 7 NC 8 A12 9 A7 10 A6 11 A5 12 A4 13 A3 14 28 A10 27 CE 26 I/O7 25 I/O6 24 I/O5 23 I/O4 22 I/O3 21 GND 20 I/O2 19 I/O1 18 I/O0 17 A0 16 A1 15 A2 2 AT28HC64B AT28HC64B Block Diagram VCC GND OE WE CE ADDRESS INPUTS OE, CE and WE LOGIC Y DECODER X DECODER DATA INPUTS/OUTPUTS I/O0 - I/O7 DATA LATCH INPUT/OUTPUT BUFFERS Y-GATING CELL MATRIX IDENTIFICATION Ordering Information 1 Standard Package tACC ICC mA Active Standby Ordering Code AT28HC64B-70JI AT28HC64B-70PI AT28HC64B-70SI AT28HC64B-70TI AT28HC64B-90JI AT28HC64B-90PI AT28HC64B-90SI AT28HC64B-90TI AT28HC64B-12JI AT28HC64B-12PI AT28HC64B-12SI AT28HC64B-12TI Note See “Valid Part Numbers” on page Green Package Option Pb/Halide-free tACC ICC mA Active Standby Ordering Code AT28HC64B-70TU AT28HC64B-70JU AT28HC64B-70SU AT28HC64B-90JU AT28HC64B-90PU AT28HC64B-90SU AT28HC64B-90TU AT28HC64B-12JU AT28HC64B-12SU Package 32J 28P6 28S 28T 32J 28P6 28S 28T 32J 28P6 28S 28T Package 28T 32J 28S 32J 28P6 28S 28T 32J 28S 32J 28P6 28S 28T Package Type 32-lead, Plastic J-leaded Chip Carrier PLCC 28-lead, Wide, Plastic Dual Inline Package PDIP 28-lead, Wide, Plastic Gull Wing Small Outline SOIC 28-lead, Plastic Thin Small Outline Package TSOP Valid Part Numbers The following table lists standard Atmel products that can be ordered. Device Numbers Speed Package and Temperature Combinations AT28HC64B JI, PI, SI, TI, TU, JU, SU AT28HC64B JI, JU, PI, PU, SI, SU, TI, TU AT28HC64B JI, JU, PI, PU, SI, SU, TI, TU Die Products Reference Section Parallel EEPROM Die Products AT28HC64B Operation Range Industrial -40°C to 85°C Operation Range Industrial -40°C to 85°C Packaging Information 32J PLCC PIN NO. 1 IDENTIFIER e D1 D B1 E2 A2 A1 A 0.51 0.020 MAX 3X COMMON DIMENSIONS Unit of Measure = mm This package conforms to JEDEC reference MS-016, Variation AE. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is mm per side. Dimension D1 and E1 include mold mismatch and are measured at the extreme material condition at the upper or lower parting line. Lead coplanarity is mm maximum. SYMBOL MIN NOM MAX NOTE Note 2 Note 2 10/04/01 TITLE 2325 Orchard Parkway 32J, 32-lead, Plastic J-leaded Chip Carrier PLCC R San Jose, CA 95131 14 AT28HC64B 28P6 PDIP D PIN 1

PDF Datasheet Preview

• Fast Read Access Time 70 ns
• Automatic Page Write Operation

Internal Address and Data Latches for 64 Bytes
• Fast Write Cycle Times

Page Write Cycle Time 10 ms Maximum Standard 2 ms Maximum Option Ref. AT28HC64BF Datasheet
1 to 64-byte Page Write Operation
• Low Power Dissipation
40 mA Active Current 100 µA CMOS Standby Current
• Hardware and Software Data Protection
• DATA Polling and Toggle Bit for End of Write Detection
• High Reliability CMOS Technology Endurance 100,000 Cycles Data Retention 10 Years
• Single 5 V ±10% Supply
• CMOS and TTL Compatible Inputs and Outputs
• JEDEC Approved Byte-wide Pinout
• Industrial Temperature Ranges
• Green Pb/Halide-free Packaging Option
64K 8K x 8 High Speed Parallel EEPROM with Page Write and Software Data Protection

The AT28HC64B is a high-performance electrically-erasable and programmable readonly memory EEPROM . Its 64K of memory is organized as 8,192 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 55 ns with power dissipation of just 220 mW. When the device is deselected, the CMOS standby current is less than 100 µA.

The AT28HC64B is accessed like a Static RAM for the read or write cycle without the need for external components. The device contains a 64-byte page register to allow writing of up to 64 bytes simultaneously. During a write cycle, the addresses and 1 to 64 bytes of data are internally latched, freeing the address and data bus for other operations. Following the initiation of a write cycle, the device will automatically write the latched data using an internal control timer. The end of a write cycle can be detected by DATA polling of I/O7. Once the end of a write cycle has been detected, a new access for a read or write can begin.

Atmel’s AT28HC64B has additional features to ensure high quality and manufacturability. The device utilizes internal error correction for extended endurance and improved data retention characteristics. An optional software data protection mechanism is available to guard against inadvertent writes. The device also includes an extra 64 bytes of EEPROM for device identification or tracking.

AT28HC64B

Pin Configurations

Pin Name A0 - A12 CE OE WE I/O0 - I/O7 NC DC

Function Addresses Chip Enable Output Enable Write Enable Data Inputs/Outputs No Connect Don’t Connect
28-lead PDIP/SOIC Top View

NC 1 A12 2

A7 3 A6 4 A5 5 A4 6 A3 7 A2 8 A1 9 A0 10 I/O0 11 I/O1 12 I/O2 13 GND 14
28 VCC 27 WE 26 NC 25 A8 24 A9 23 A11 22 OE 21 A10 20 CE 19 I/O7 18 I/O6 17 I/O5 16 I/O4 15 I/O3
32-lead PLCC Top View
4 A7 3 A12 2 NC 1 DC 32 VCC 31 WE 30 NC

A6 5 A5 6 A4 7 A3 8 A2 9 A1 10 A0 11 NC 12 I/O0 13
29 A8 28 A9 27 A11 26 NC 25 OE 24 A10 23 CE 22 I/O7 21 I/O6

I/O1 14 I/O2 15 GND 16 DC 17 I/O3 18 I/O4 19 I/O5 20

Note PLCC package pins 1 and 17 are Don’t Connect.
28-lead TSOP Top View

OE 1 A11 2

A9 3 A8 4 NC 5 WE 6 VCC 7 NC 8 A12 9 A7 10 A6 11 A5 12 A4 13 A3 14
28 A10 27 CE 26 I/O7 25 I/O6 24 I/O5 23 I/O4 22 I/O3 21 GND 20 I/O2 19 I/O1 18 I/O0 17 A0 16 A1 15 A2
2 AT28HC64B

AT28HC64B

Block Diagram

VCC GND

OE WE CE

ADDRESS INPUTS

OE, CE and WE LOGIC

Y DECODER

X DECODER

DATA INPUTS/OUTPUTS I/O0 - I/O7

DATA LATCH INPUT/OUTPUT

BUFFERS Y-GATING

CELL MATRIX

IDENTIFICATION
Ordering Information 1

Standard Package
tACC

ICC mA

Active Standby
Ordering Code

AT28HC64B-70JI AT28HC64B-70PI AT28HC64B-70SI AT28HC64B-70TI AT28HC64B-90JI AT28HC64B-90PI AT28HC64B-90SI AT28HC64B-90TI AT28HC64B-12JI AT28HC64B-12PI AT28HC64B-12SI AT28HC64B-12TI

Note See “Valid Part Numbers” on page

Green Package Option Pb/Halide-free
tACC

ICC mA

Active Standby
Ordering Code AT28HC64B-70TU AT28HC64B-70JU AT28HC64B-70SU AT28HC64B-90JU AT28HC64B-90PU AT28HC64B-90SU AT28HC64B-90TU AT28HC64B-12JU AT28HC64B-12SU

Package 32J 28P6 28S 28T 32J 28P6 28S 28T 32J 28P6 28S 28T

Package 28T 32J 28S 32J 28P6 28S 28T 32J 28S
32J 28P6 28S 28T

Package Type 32-lead, Plastic J-leaded Chip Carrier PLCC 28-lead, Wide, Plastic Dual Inline Package PDIP 28-lead, Wide, Plastic Gull Wing Small Outline SOIC 28-lead, Plastic Thin Small Outline Package TSOP

Valid Part Numbers

The following table lists standard Atmel products that can be ordered.

Device Numbers

Speed

Package and Temperature Combinations

AT28HC64B

JI, PI, SI, TI, TU, JU, SU

AT28HC64B

JI, JU, PI, PU, SI, SU, TI, TU

AT28HC64B

JI, JU, PI, PU, SI, SU, TI, TU

Die Products

Reference Section Parallel EEPROM Die Products

AT28HC64B

Operation Range Industrial
-40°C to 85°C

Operation Range Industrial
-40°C to 85°C

Packaging Information
32J PLCC

PIN NO. 1 IDENTIFIER
e D1 D

B1 E2

A2 A1 A
0.51 0.020 MAX 3X

COMMON DIMENSIONS Unit of Measure = mm

This package conforms to JEDEC reference MS-016, Variation AE. Dimensions D1 and E1 do not include mold protrusion.

Allowable protrusion is mm per side. Dimension D1 and E1 include mold mismatch and are measured at the extreme material condition at the upper or lower parting line. Lead coplanarity is mm maximum.

SYMBOL MIN NOM MAX NOTE

Note 2

Note 2
10/04/01

TITLE 2325 Orchard Parkway 32J, 32-lead, Plastic J-leaded Chip Carrier PLCC R San Jose, CA 95131
14 AT28HC64B
28P6 PDIP

D PIN 1

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Datasheet ID: AT28HC64B-90JI 518974