參數(shù)資料
型號: μPD789187
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
中文描述: 8位單片機微控制器(8位單片微控制器)
文件頁數(shù): 67/146頁
文件大小: 630K
代理商: ΜPD789187
Preliminary Product Information
67
μ
PD789186, 789187, 789196, 789197
(3) Serial interface 20 control registers
Serial interface 20 is controlled by the following registers.
Serial operation mode register 20 (CSIM20)
Asynchronous serial interface mode register 20 (ASIM20)
Asynchronous serial interface status register 20 (ASIS20)
Baud rate generator control register 20 (BRGC20)
(a) Serial operation mode register 20 (CSIM20)
CSIM20 is used to make the settings related to three-wire serial I/O mode.
CSIM20 is manipulated using a 1-bit or 8-bit memory manipulation instruction.
A RESET input clears CSIM20 to 00H.
Figure 6-33. Serial Operation Mode Register 20 Format
CSIE20
0
1
Three-wire serial I/O mode operation control
CSIE20
SSE20
0
0
DAP20
DIR20 CSCK20 CKP20
CSIM20
Symbol
Address
When reset
R/W
FF72H
00H
R/W
7
6
5
4
3
2
1
0
Operation disabled
Operation enabled
DIR20
0
1
First-bit specification
MSB
LSB
CSCK20
0
1
Three-wire serial I/O mode clock selection
External clock pulse input to the SCK20 pin
Output of the dedicated baud rate generator
SSE20
0
1
Not used
Used
DAP20
0
1
Three-wire serial I/O mode data phase selection
Outputs at the falling edge of SCK20.
Outputs at the rising edge of SCK20.
SS20-pin selection
Functions of the SS20/P26 pin
Port function
0
1
Communication status
Communication enabled
Communication enabled
Communication disabled
CKP20
0
1
Three-wire serial I/O mode clock phase selection
Clock is low active; SCK20 is high in the idle state
Clock is high active; SCK20 is low in the idle state
Cautions 1.
Bits 4 and 5 must be fixed to 0.
CSIM20 must be cleared to 00H, if UART mode is selected.
2.
相關(guān)PDF資料
PDF描述
μPD789197 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
μPD789186 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
μPD789198 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
μPD789216Y 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
μPD789217Y 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PD78F0134 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD78F0134(A) 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD78F0134(A1) 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD78F0134A 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD78F0134A1 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers