参数资料
型号: 34VL02T/OT
厂商: Microchip Technology
文件页数: 13/32页
文件大小: 0K
描述: IC EEPROM 2KBIT 400KHZ SOT23-6
产品培训模块: I2C Serial EEPROM
标准包装: 1
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 2K (256 x 8)
速度: 400kHz
接口: I²C,2 线串口
电源电压: 1.5 V ~ 3.6 V
工作温度: 0°C ~ 70°C
封装/外壳: SOT-23-6
供应商设备封装: SOT-23-6
包装: 标准包装
其它名称: 34VL02T/OTDKR
34VL02
TABLE 7-1:
SOFTWARE WRITE PROTECTION INSTRUCTION SET WP = 0
Address Pins
Device Type
Identifier
Chip Select Bits
R/W
A2
A1
A0
B7
B6
B5
B4
B3
B2
B1
B0
SWP
V SS
V SS
V HV
0 1 1 0 0 0
1
0
CSWP V SS
V CC
V HV
0 1 1 0 0 1
1
0
PSWP A2 A1 A0
0 1 1 0
A2 A1
A0
0
Read SWP V SS
Read CSWP V SS
V SS
V CC
V HV
V HV
0 1 1 0 0 0
0 1 1 0 0 1
1
1
1
1
Read PSWP A2 A1 A0
0 1 1 0
A2 A1
A0
1
1.
2.
A0 is used to detect V HV for the SWP and CSWP commands.
B3, B2 and B1 are compared to the A2, A1 and A0 external pins, respectively on the 34XX02.
TABLE 7-2:
ACKNOWLEDGE TABLE FOR WRITE OR WRITE PROTECTION WITH R/W = 0
Status
Write-
Protect
Instruction
ACK
Address
ACK
Data Byte
ACK
Write
Cycle
PSWP , SWP , CSWP
No
Ack
Don’t Care
No
Ack
Don’t Care No Ack
No
Permanently Protected
x
PAGE or BYTE
WRITE in lower 128
Ack
Address
Ack
Data
No Ack
No
bytes
SWP
No
Ack
Don’t Care
No
Ack
Don’t Care No Ack
No
CSWP
Ack
Don’t Care
Ack
Don’t Care
Ack
Yes
0
PSWP
Ack
Don’t Care
Ack
Don’t Care
Ack
Yes
PAGE or BYTE
WRITE in lower 128
Ack
Address
Ack
Data
No Ack
No
Protected with SWP
bytes
SWP
No
Ack
Don’t Care
No
Ack
Don’t Care No Ack
No
1
CSWP
PSWP
Ack
Ack
Don’t Care
Don’t Care
Ack
Ack
Don’t Care No Ack
Don’t Care No Ack
No
No
PAGE or BYTE
WRITE
PSWP , SWP , or CSWP
Ack
Ack
Address
Don’t Care
Ack
Ack
Data
Don’t Care
No Ack
Ack
No
Yes
Not Protected
0
PAGE or BYTE
WRITE
PSWP , SWP , or CSWP
Ack
Ack
Address
Don’t Care
Ack
Ack
Data Ack
Don’t Care No Ack
Yes
No
1
PAGE or BYTE
WRITE
Ack
Address
Ack
Address
No Ack
No
TABLE 7-3:
ACKNOWLEDGE TABLE FOR WRITE OR WRITE PROTECTION WITH R/W = 1
Status
Permanently Protected
Protected with SWP
Not protected
? 2008 Microchip Technology Inc.
Instruction
PSWP , SWP , CSWP
SWP
CSWP
PSWP
PSWP , SWP , CSWP
ACK
No Ack
No Ack
Ack
Ack
Ack
DS22079A-page 13
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