参数资料
型号: AT28BV256-20TU
厂商: Atmel
文件页数: 10/17页
文件大小: 0K
描述: IC EEPROM 256KBIT 200NS 28TSOP
标准包装: 234
格式 - 存储器: EEPROMs - 并行
存储器类型: EEPROM
存储容量: 256K (32K x 8)
速度: 200ns
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: 28-TSSOP(0.465",11.8mm 宽)
供应商设备封装: 28-TSOP
包装: 托盘
产品目录页面: 1458 (CN2011-ZH PDF)
16. Page Mode Characteristics
Symbol
Parameter
Min
Max
Units
t WC
t AS
t AH
t DS
t DH
t WP
t BLC
t WPH
Write Cycle Time
Address Set-up Time
Address Hold Time
Data Set-up Time
Data Hold Time
Write Pulse Width
Byte Load Cycle Time
Write Pulse Width High
0
50
50
0
200
100
10
150
ms
ns
ns
ns
ns
ns
μs
ns
17. Programming Algorithm (1)(2)(3)
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA A0
TO
ADDRESS 5555
LOAD DATA XX
TO
ANY ADDRESS (3)
LOAD LAST BYTE
TO
LAST ADDRESS (3)
WRITES ENABLED (2)
ENTER DATA
PROTECT STATE
Notes:
1. Data Format: I/O7 - I/O0 (Hex); Address Format: A14 - A0 (Hex).
2. Data protect state will be re-activated at the end of program cycle.
3. 1 to 64 bytes of data are loaded.
18. Software Protected Program Cycle Waveforms (1)(2)(3)
t WP
t WPH
t BLC
t AS
t AH
t DH
t DS
t WC
Notes:
10
1. A0 - A14 must conform to the addressing sequence for the first three bytes as shown above.
2. A6 through A14 must specify the same page address during each high to low transition of WE (or CE) after the software
code has been entered.
3. OE must be high only when WE and CE are both low.
AT28BV256
0273K–PEEPR–2/09
相关PDF资料
PDF描述
AT28C256E-15JU IC EEPROM 256KBIT 150NS 32PLCC
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AT28C256F-15JU IC EEPROM 256KBIT 150NS 32PLCC
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