參數(shù)資料
型號: AT28HC64B
廠商: Atmel Corp.
元件分類: DRAM
英文描述: 8K x 8 High Speed Parallel EEPROM with Page Write and Software Data Protection(8K x 8高速并行EEPROM帶分頁寫數(shù)據(jù)保護和軟件數(shù)據(jù)保護)
中文描述: 8K的× 8頁的高速寫入和軟件數(shù)據(jù)保護并行的EEPROM(8K的× 8高速并行EEPROM的帶分頁寫數(shù)據(jù)保護和軟件數(shù)據(jù)保護)
文件頁數(shù): 1/14頁
文件大小: 324K
代理商: AT28HC64B
1
Features
Fast Read Access Time – 55 ns
Automatic Page Write Operation
Internal Address and Data Latches for 64 Bytes
Fast Write Cycle Times
Page Write Cycle Time: 10 ms Maximum
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 5V
±
10% Supply
CMOS and TTL Compatible Inputs and Outputs
JEDEC Approved Byte-wide Pinout
Commercial and Industrial Temperature Ranges
Description
The AT28HC64B is a high-performance electrically erasable and programmable read
only 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.
Pin Configurations
64K (8K x 8)
High Speed
Parallel
EEPROM with
Page Write and
Software Data
Protection
AT28HC64B
Rev. 0274F
12/99
Pin Name
Function
A0 - A12
Addresses
CE
Chip Enable
OE
Output Enable
WE
Write Enable
I/O0 - I/O7
Data Inputs/Outputs
NC
No Connect
DC
Don
t Connect
TSOP
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
OE
A11
A9
A8
NC
WE
VCC
NC
A12
A7
A6
A5
A4
A3
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
GND
I/O2
I/O1
I/O0
A0
A1
A2
PLCC
Top View
Note: PLCC package pins 1 and 17 are
DON
T CONNECT.
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
A6
A5
A4
A3
A2
A1
A0
NC
I/O0
A8
A9
A11
NC
OE
A10
CE
I/O7
I/O6
4
3
2
1
3
3
3
1
1
1
1
1
1
2
I
I
G
D
I
I
I
A
A
N
D
V
W
N
PDIP, SOIC
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
NC
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
VCC
WE
NC
A8
A9
A11
OE
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
(continued)
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AT28HC64B12JI 制造商:ATMEL 功能描述:New
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