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参数资料
| 型号： | 85C72 |
| 厂商： | Microchip Technology Inc. |
| 英文描述： | 1K CMOS Serial EEPROM(1K位,5.0V CMOS串行EEPROM) |
| 中文描述： | 一千的CMOS串行EEPROM（每1000位和5.0V的CMOS串行EEPROM的） |
| 文件页数： | 7/8页 |
| 文件大小： | 105K |
| 代理商： | 85C72 |
1995 Microchip Technology Inc.
DS11182C-page 7
85C72/82/92
9.0
PIN DESCRIPTION
9.1
A0, A1 and A2 Chip Address Inputs
The levels on these inputs are compared with the cor-
responding bits in the slave address. The chip is
selected if the compare is true. For 85C92, A0 is no
function.
Up to eight 85C72/82s or four 85C92s can be con-
nected to the bus.
These inputs must be connected to either V
SS
or V
CC
.
9.2
SDA Serial Address/Data Input/Output
This is a bidirectional pin used to transfer addresses
and data into and data out of the device. It is an open
drain terminal, therefore the SDA bus requires a pullup
resistor to V
CC
(typical 10KW). For normal data trans-
fer SDA is allowed to change only during SCL LOW.
Changes during SCL HIGH are reserved for indicating
the START and STOP conditions.
9.3
SCL Serial Clock
This input is used to synchronize the data transfer from
and to the device.
9.4
NC No Connect
This pin can be left open or used as a tie point.
Note 1:
A “page” is defined as the maximum num-
ber of bytes that can be programmed in a
single write cycle. The 85C72/82 page is
2 bytes long and the 85C92 page is 8
bytes long.
Note 2:
A “block” is defined as a continuous area
of memory with distinct boundaries. The
address pointer can not cross the bound-
ary from one block to another. It will, how-
ever, wrap around from the end of a block
to the first location in the same block. The
85C72/82 has only one block (256 bytes),
while the 85C92 has two blocks of 256
bytes each.
相关PDF资料 |
PDF描述 |
|---|---|
| 85C82 | 2K CMOS Serial EEPROM(2K位,5.0V CMOS串行EEPROM) |
| 85C92 | 4K CMOS Serial EEPROM(4K位,5.0V CMOS串行EEPROM) |
| 85CNQ015APBF | SCHOTTKY RECTIFIER New GenIII D-61 Package |
| 85CNQ015ASMPBF | SCHOTTKY RECTIFIER New GenIII D-61 Package |
| 85CNQ015 | SCHOTTKY RECTIFIER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 85C72/J | 制造商:未知厂家 制造商全称:未知厂家 功能描述:I2C Serial EEPROM |
| 85C72/P | 制造商:未知厂家 制造商全称:未知厂家 功能描述:I2C Serial EEPROM |
| 85C72/SM | 制造商:未知厂家 制造商全称:未知厂家 功能描述:I2C Serial EEPROM |
| 85C72/SN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:I2C Serial EEPROM |
| 85C72-E/J | 制造商:未知厂家 制造商全称:未知厂家 功能描述:I2C Serial EEPROM |
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