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參數(shù)資料
| 型號(hào)： | PCF8570PN |
| 英文描述： | Serial SRAM |
| 中文描述： | 串行SRAM |
| 文件頁(yè)數(shù)： | 10/24頁(yè) |
| 文件大?。?/td> | 179K |
| 代理商： | PCF8570PN |
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1997 Feb 13
10
Philips Semiconductors
Product specification
256 to 1024
×
8-bit CMOS EEPROMs with
I
2
C-bus interface
PCF85xxC-2 family
8.5
Read operations
Read operations are initiated in the same manner as write
operations with the exception that the LSB of the slave
address is set to logic 1.
There are three basic read operations; current address
read, random read and sequential read sequential read.
8.5.1
R
EMARK
The lower 8 bits of the word address are incremented after
each transmission of a data byte (read or write). The MSB
of the word address, which is defined in the slave address,
is not changed when the word address count overflows.
Thus, the word address overflows from 255 to 0 and from
511 to 256.
Fig.8 Master reads PCF85xxC-2 slave after setting word address (write word address; read data).
handbook, full pagewidth
S
0 A
SLAVE ADDRESS
WORD ADDRESS
A
A
SLAVE ADDRESS
acknowledge
from slave
acknowledge
from slave
acknowledge
from slave
R/W
acknowledge
from master
A
DATA
auto increment
word address
MBA703 - 1
P
no acknowledge
from master
1
DATA
auto increment
word address
last byte
R/W
S
1
n bytes
at this moment master
transmitter becomes
master receiver and
EEPROM slave receiver
becomes slave transmitter
Fig.9 Master reads PCF85xxC-2 immediately after first byte (read mode).
handbook, full pagewidth
S
1 A
SLAVE ADDRESS
DATA
A
1
DATA
acknowledge
from slave
acknowledge
from master
no acknowledge
from master
R/W
auto increment
word address
MBA704 - 1
auto increment
word address
n bytes
last bytes
P
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| PCF8574PN | I/O Port |
| PCF8574TD | I/O Port |
| PCF8574TDK-T | I/O Port |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCF8570T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:256 x 8-bit static low-voltage RAM with I2C-bus interface |
| PCF8570T/F5 | 制造商:NXP Semiconductors 功能描述:IC SRAM CMOS 2K SMD 8570 SOIC8 |
| PCF8570T/F5,512 | 功能描述:靜態(tài)隨機(jī)存取存儲(chǔ)器 256X8-BIT CMOS RoHS:否 制造商:Cypress Semiconductor 存儲(chǔ)容量:16 Mbit 組織:1 M x 16 訪問(wèn)時(shí)間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray |
| PCF8570T/F5,518 | 功能描述:靜態(tài)隨機(jī)存取存儲(chǔ)器 RAM 256X8 W/I2C LOW PWR -40+85 RoHS:否 制造商:Cypress Semiconductor 存儲(chǔ)容量:16 Mbit 組織:1 M x 16 訪問(wèn)時(shí)間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray |
| PCF8570T/F5,518-CUT TAPE | 制造商:NXP 功能描述:PCF8570 Series 256 x 8-Bit 6 V Static Low-Voltage RAM I2C Bus Interface - SOIC-8 |
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