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參數(shù)資料
| 型號： | PCF84C44x |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-BIT SINGLE CHIP MICROCONTROLLERS |
| 中文描述： | 8位單晶片微控制器 |
| 文件頁數(shù)： | 8/10頁 |
| 文件大?。?/td> | 145K |
| 代理商： | PCF84C44X |
Philips Semiconductors
The I
2
C serial bus: theory and practical consideration using Philips
low-voltage PCF84Cxx and PCD33xx
μ
C families
Application note
AN168
1988 Dec
8
‘NEGATIVE ACKNOWLEDGE’
MOV S1, #18H
MOV S0, #40H
MOV S1, #0F8H
CALL ACKWT:
MOV S2, #01H
MOV S0,A
MOV S1, #0D8H
SDA
SCL
START
ADDRESS ’40H’
DATA
STOP
ACKNOWLEDGE
RD
:Initialize serial I/O control
:register
:Preload serial register S0
:with slave address and RD
:control bit
:Send address to bus along with
:start condition
:Wait for acknowledge (as
:before)
:Leave acknowledge mode
:Read data from slave to S0
:Test for byte received by
:testing S1 PIN bit
:Wait until PIN received
:Set Bit Counter to 1 and
:become a receiver (A9 =
:Mst, Rec, Bus Busy, Bit Counter =
:0001)
:Move data to accumulator and
:clock out a negative
:acknowledge
:Generate Stop Condition
MOV S0,A
MOV S1, #0A9H
JB4 Wait
MOV A,S1
WAIT:
SL00951
Figure 5.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| PCF84C470P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
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| PCF84C81 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Telecom microcontrollers |
| PCF84C81A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Telecom microcontrollers |
| PCF84C81AP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Telecom microcontroller |
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