参数资料
型号: M37161MF-XXXSP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
封装: 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件页数: 49/129页
文件大小: 1092K
代理商: M37161MF-XXXSP
Rev.1.00
2003.11.25
page 26 of 128
M37161M8/MA/MF-XXXSP/FP,M37161EFSP/FP
8
Serial I/O shift register (8)
Data bus
Serial I/O
interrupt request
Selection gate: Connect to
black side at
reset.
Synchronous
circuit
Frequency divider
1/8
1/4
1/16
SM1
SM0
Serial I/O counter (8)
SM5 : LSB
MSB
S
SM2
1/2
XIN
SIN
SOUT
SCLK
1/2
XCIN
1/2
CM7
1/2
Note : When the data is set in the serial I/O register (address 00EA
(See note)
CM : CPU mode register
SM : Serial I/O mode register
16
), the register functions as the serial I/O shift register.
P20 Latch
SM3
P21 Latch
SM3
SM6
8.5 SERIAL I/O
This microcomputer has a built-in serial I/O which can either transmit
or receive 8-bit data serially in the clock synchronous mode.
The serial I/O block diagram is shown in Figure 8.5.1. The synchro-
nous clock I/O pin (SCLK), and data output pin (SOUT) also function
as port P4, data input pin (SIN) also functions as port P20–P22.
Bit 3 of the serial I/O mode register (address 00EB16) selects whether
the synchronous clock is supplied internally or externally (from the
SCLK pin). When an internal clock is selected, bits 1 and 0 select
whether f(XIN) or f(XCIN) is divided by 8, 16, 32, or 64. To use the SIN
pin for serial I/O, set the corresponding bit of the port P2 direction
register (address 00C516) to “0.”
Fig. 8.5.1 Serial I/O Block Diagram
The operation of the serial I/O is described below. The operation of
the serial I/O differs depending on the clock source; external clock or
internal clock.
相关PDF资料
PDF描述
M37161EFSP 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP42
M37161MA-XXXSP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
M37161M8-XXXSP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
M37202E3SP 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP64
M37207EFFP 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PQFP80
相关代理商/技术参数
参数描述
M3720 制造商:未知厂家 制造商全称:未知厂家 功能描述:1 KEY 1 SOUND
M3720-1 制造商:未知厂家 制造商全称:未知厂家 功能描述:1 KEY 1 SOUND
M3720-10 制造商:未知厂家 制造商全称:未知厂家 功能描述:1 KEY 1 SOUND
M3720-2 制造商:未知厂家 制造商全称:未知厂家 功能描述:1 KEY 1 SOUND
M3720-3 制造商:未知厂家 制造商全称:未知厂家 功能描述:1 KEY 1 SOUND