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参数资料
| 型号： | AT28C64B-20 |
| 厂商： | Atmel Corp. |
| 英文描述： | 8-Bit Shift Registers With Output Registers 16-SSOP -40 to 85 |
| 中文描述： | 64K的（8K的× 8）的CMOS页写入和软件数据保护E2PROM的 |
| 文件页数： | 8/13页 |
| 文件大小： | 317K |
| 代理商： | AT28C64B-20 |
AT28C64B
8
Software Data Protection
Enable Algorithm
(1)
Notes for software program code:
1.
Data Format: I/O7 - I/O0 (Hex);
Address Format: A12 - A0 (Hex).
2.
Write Protect state will be activated at end of
write even if no other data is loaded.
3.
Write Protect state will be deactivated at end of
write period even if no other data is loaded.
4.
1 to 64 bytes of data are loaded.
Software Data Protection
Disable Algorithm
(1)
Software Protected Write Cycle Waveforms
(1)(2)
Notes:
1.
A6 through A12 must specify the same page address during each high to low transition of WE (or CE) after the software
code has been entered.
OE must be high only when WE and CE are both low.
2.
LOAD DATA AA
TO
ADDRESS 1555
LOAD DATA 55
TO
ADDRESS 0AAA
LOAD DATA A0
TO
ADDRESS 1555
LOAD DATA XX
TO
ANY ADDRESS
(4)
LOAD LAST BYTE
TO
LAST ADDRESS
ENTER DATA
PROTECT STATE
WRITES ENABLED
(2)
LOAD DATA AA
TO
ADDRESS 1555
LOAD DATA 55
TO
ADDRESS 0AAA
LOAD DATA 80
TO
ADDRESS 1555
LOAD DATA AA
TO
ADDRESS 1555
LOAD DATA 20
TO
ADDRESS 1555
LOAD DATA XX
TO
ANY ADDRESS
(4)
LOAD LAST BYTE
TO
LAST ADDRESS
LOAD DATA 55
TO
ADDRESS 0AAA
EXIT DATA
PROTECT STATE
(3)
相关PDF资料 |
PDF描述 |
|---|---|
| AT28C64B-20JC | 8-Bit Shift Registers With Output Registers 16-SSOP -40 to 85 |
| AT28C64B-20JI | 8-Bit Shift Registers With Output Registers 16-SOIC -40 to 85 |
| AT28C64B-20PC | 8-Bit Shift Registers With Output Registers 16-SOIC -40 to 85 |
| AT28C64E-12JC | 64K 8K x 8 Battery-Voltage CMOS E2PROM |
| AT28C64E-12JI | 64K 8K x 8 Battery-Voltage CMOS E2PROM |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT28C64B-20DC | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x8 EEPROM |
| AT28C64B-20DI | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x8 EEPROM |
| AT28C64B-20DM/883 | 制造商:e2v Aerospace & Defense 功能描述:PROM, ELECTR. ERASABLE, 8K X 8, 200 NS ACCESS TIME |
| AT28C64B-20JA | 功能描述:IC EEPROM 64KBIT 200NS 32PLCC RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:378 系列:- 格式 - 存储器:闪存 存储器类型:FLASH 存储容量:8M（1M x 8，512K x 16） 速度:110ns 接口:并联 电源电压:2.7 V ~ 3.6 V 工作温度:-40°C ~ 85°C 封装/外壳:48-CBGA 供应商设备封装:48-CBGA（7x7） 包装:托盘 |
| AT28C64B20JC | 制造商:Atmel Corporation 功能描述:EEPROM, 8K x 8, 32 Pin, Plastic, PLCC |
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