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參數(shù)資料
| 型號(hào)： | PCF8570 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 256 x 8-bit static low-voltage RAM with I2C-bus interface |
| 中文描述： | 256 × 8位靜態(tài)低電壓內(nèi)存具有I2C總線接口 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 140K |
| 代理商： | PCF8570 |
1999 Jan 06
5
Philips Semiconductors
Product specification
256
×
8-bit static low-voltage RAM with
I
2
C-bus interface
PCF8570
8
CHARACTERISTICS OF THE I
2
C-BUS
The I
2
C-bus is for bidirectional, two-line communication
between different ICs or modules. The two lines are a
serial data line (SDA) and a serial clock line (SCL). Both
lines must be connected to a positive supply via a pull-up
resistor. Data transfer may be initiated only when the bus
is not busy.
8.1
Bit transfer
One data bit is transferred during each clock pulse.
The data on the SDA line must remain stable during the
HIGH period of the clock pulse as changes in the data line
at this time will be interpreted as a control signal.
Fig.3 Bit transfer.
MBA607
data line
stable;
data valid
change
of data
allowed
SDA
SCL
8.2
Start and stop conditions
Both data and clock lines remain HIGH when the bus is not busy. A HIGH-to-LOW transition of the data line, while the
clock is HIGH is defined as the start condition (S). A LOW-to-HIGH transition of the data line while the clock is HIGH is
defined as the stop condition (P).
Fig.4 Definition of start and stop conditions.
MBA608
SDA
SCL
P
STOP condition
SDA
SCL
S
START condition
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCF8570P | 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 |
| PCF8570P/F5 | 制造商:NXP Semiconductors 功能描述:3400ns Bulk 制造商:NXP Semiconductors 功能描述:IC SRAM CMOS 2K 8570 DIP8 |
| PCF8570P/F5,112 | 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 |
| PCF8570P/F5 | 制造商:NXP Semiconductors 功能描述:IC SRAM CMOS 2K 8570 DIP8 |
| PCF8570P/F5112 | 制造商:NXP Semiconductors 功能描述:IC SRAM 1KBIT I2C DIP-8 制造商:NXP Semiconductors 功能描述:IC SRAM 2K 8570 DIP8 |
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