at28c64-20 ATMEL Corporation, at28c64-20 Datasheet

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at28c64-20

Manufacturer Part Number
at28c64-20
Description
64k 8k X 8 Parallel Eeproms
Manufacturer
ATMEL Corporation
Datasheet

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Features
Description
The AT28C64 is a low-power, high-performance 8,192 words by 8-bit nonvolatile elec-
trically erasable and programmable read only memory with popular, easy-to-use fea-
tures. The device is manufactured with Atmel’s reliable nonvolatile technology.
Pin Configurations
RDY/BUSY (or NC)
Pin Name
A0 - A12
CE
OE
WE
I/O0 - I/O7
RDY/BUSY
NC
DC
Fast Read Access Time – 120 ns
Fast Byte Write – 200 µs or 1 ms
Self-timed Byte Write Cycle
Direct Microprocessor Control
Low Power
High Reliability
5V ± 10% Supply
CMOS and TTL Compatible Inputs and Outputs
JEDEC Approved Byte-wide Pinout
Commercial and Industrial Temperature Ranges
– Internal Address and Data Latches
– Internal Control Timer
– Automatic Clear Before Write
– READY/BUSY Open Drain Output
– DATA Polling
– 30 mA Active Current
– 100 µA CMOS Standby Current
– Endurance: 10
– Data Retention: 10 Years
VCC
A11
A12
WE
OE
NC
A9
A8
A7
A6
A5
A4
A3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
Ready/Busy Output
No Connect
Don’t Connect
4
Top View
or 10
TSOP
5
Cycles
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
GND
I/O2
I/O1
I/O0
A0
A1
A2
Note: PLCC package pins 1 and 17 are
DON’T CONNECT.
RDY/BUSY (or NC)
I/O0
NC
A6
A5
A4
A3
A2
A1
A0
GND
I/O0
I/O1
I/O2
A12
A7
A6
A5
A4
A3
A2
A1
A0
5
6
7
8
9
10
11
12
13
LCC, PLCC
PDIP, SOIC
Top View
Top View
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
(continued)
29
28
27
26
25
24
23
22
21
VCC
WE
NC
A8
A9
A11
OE
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
A8
A9
A11
NC
OE
A10
CE
I/O7
I/O6
64K (8K x 8)
Parallel
EEPROMs
AT28C64
AT28C64X
Rev. 0001H–12/99
1

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at28c64-20 Summary of contents

Page 1

... Commercial and Industrial Temperature Ranges Description The AT28C64 is a low-power, high-performance 8,192 words by 8-bit nonvolatile elec- trically erasable and programmable read only memory with popular, easy-to-use fea- tures. The device is manufactured with Atmel’s reliable nonvolatile technology. Pin Configurations ...

Page 2

... The AT28C64 is accessed like a Static RAM for the read or write cycles without the need for external components. Dur- ing a byte write, the address and data are latched inter- nally, freeing the microprocessor address and data bus for other operations. Following the initiation of a write cycle, the device will busy state and automatically clear and write the latched data using an internal control timer ...

Page 3

... OE low, CE high or WE high inhibits byte write cycles. CHIP CLEAR: The contents of the entire memory of the AT28C64 may be set to the high state by the CHIP CLEAR operation. By setting CE low and volts, the chip is cleared when a 10 msec low pulse is applied to WE. ...

Page 4

... 0. 1. Com 2. 1.0V CC Ind. Com MHz OUT Ind 2 4.0 mA for RDY/BUSY I = -400 µA OH AT28C64-20 AT28C64-25 0°C - 70°C 0°C - 70°C -40°C - 85°C -40°C - 85°C 5V ± 10% 5V ± 10 OUT High ...

Page 5

... ACC after the falling edge of CE without impact pF). L Output Test Load Max 6 12 AT28C64(X) AT28C64-20 AT28C64-25 Max Min Max Min Max 150 200 150 200 ...

Page 6

... OEH and Setup and Hold Time Time to Device Busy DB t Write Cycle Time (option available Write Waveforms WE Controlled CE Controlled AT28C64(X) 6 Min 10 50 100 AT28C64 AT28C64E Max Units ns ns 1000 200 µs ...

Page 7

... OE t Write Recovery Time WR Notes: 1. These parameters are characterized and not 100% tested. 2. See “AC Read Characteristics”. Data Polling Waveforms Chip Erase Waveforms µsec (min msec (min 12.0 ± 0. (1) AT28C64(X) Min Typ Max Units ...

Page 8

... AT28C64(X) 8 ...

Page 9

... AT28C64-12SC AT28C64-12TC AT28C64-12JI AT28C64-12PI AT28C64-12SI AT28C64-12TI AT28C64-15JC AT28C64-15PC AT28C64-15SC AT28C64-15TC AT28C64-15JI AT28C64-15PI AT28C64-15SI AT28C64-15TI AT28C64-20JC AT28C64-20PC AT28C64-20SC AT28C64-20TC AT28C64-20JI AT28C64-20PI AT28C64-20SI AT28C64-20TI AT28C64-25JC AT28C64-25PC AT28C64-25SC AT28C64-25TC AT28C64-25JI AT28C64-25PI AT28C64-25SI AT28C64-25TI Package Type Options AT28C64(X) Package Operation Range 32J Commercial 28P6 (0°C to 70°C) ...

Page 10

... AT28C64X Ordering Information I (mA ACC (ns) Active Standby 150 30 0.1 45 0.1 200 30 0.1 45 0.1 250 30 0.1 45 0.1 Valid Part Numbers The following table lists standard Atmel products that can be ordered. Device Numbers Speed AT28C64 X 12 AT28C64 X 15 AT28C64 X 20 AT28C64 X 25 Die Products Reference Section: Parallel EEPROM Die Products ...

Page 11

... Plastic Thin Small Outline Package (TSOP) Dimensions in Millimeters and (Inches)* *Controlling dimension: millimeters AT28C64(X) 1.47(37.3) 1.44(36.6) PIN 1 1.300(33.02) REF .220(5.59) MAX SEATING PLANE .161(4.09) .125(3.18) .065(1.65) .041(1.04) ...

Page 12

... Atmel Corporation 1999. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard war- ranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein ...

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