参数资料
型号: LM5117PMH
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 稳压器
英文描述: SWITCHING CONTROLLER, 530 kHz SWITCHING FREQ-MAX, PDSO20
封装: TSSOP-20
文件页数: 26/32页
文件大小: 844K
代理商: LM5117PMH
29
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37212M4/M8–XXXSP, M37212M6–XXXSP/FP
M37212EFSP/FP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
Fig. 8.5.3 Serial I/O Mode Register
b7 b6 b5 b4 b3 b2 b1 b0
Serial I/O mode register (SM) [Address 00DC16]
BNameFunctions
Serial I/O Mode Register
0, 1Internal synchronous
clock selection bits
(SM0, SM1)
b1 b0
0 0: f(XIN)/4
0 1: f(XIN)/16
1 0: f(XIN)/32
1 1: f(XIN)/64
2
Synchronous clock
selection bit (SM2)
3
Serial I/O port
selection bit (SM3)
6
5
Transfer direction
selection bit (SM5)
0: P40, P41
1: SOUT(/IN), SCLK
0: External clock
1: Internal clock
0: LSB first
1: MSB first
4
Fix this bit to “0.”
7
Nothing is assigned. This bit is a write disable bit.
When this bit is read out, the value is “0.”
After reset RW
0
0R W
RW
R W
RW
0R —
Serial input pin
selection bit (SM6)
0: Input signal from SIN pin.
1: Input signal from SOUT pin.
0
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