參數(shù)資料
型號(hào): M34551E8FP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP48
封裝: 7 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-48
文件頁數(shù): 27/155頁
文件大?。?/td> 1329K
代理商: M34551E8FP
APPLICATION
2-44
4551 Group User’s Manual
2.6 Power down function
2.6.3 Related register
(1)
Clock control register MR
Clock control register MR controls the system clock.
Set the contents of this register through register A with the TMRA instruction. The TAMR instruction
can be used to transfer the contents of register MR to register A.
Table 2.6.4 shows the clock control register MR.
Table 2.6.4 Clock control register MR
Clock control register MR
at reset : 10002
at power down : state retained
R/W
MR0=0
f(XIN)
MR0=1
f(XCIN)
MR0=0
f(XIN)/4
MR0=1
f(XCIN)/4
f(XCIN) oscillation stop, ports D6 and D7 selected
f(XCIN) oscillation enabled, ports D6 and D7 not selected
Oscillation enabled
Oscillation stop
f(XIN)
f(XCIN)
System clock (STCK) selection
bit
f(XCIN) oscillation circuit control
bit
f(XIN) oscillation circuit control bit
Clock selection bit
0
1
0
1
0
1
0
1
MR3
MR2
MR1
MR0
Note: “R” represents read enabled, and “W” represents write enabled.
(2)
Pull-up control register PU0
Pull-up control register PU0 controls the pull-up function and key-on wakeup function.
Set the contents of this register through register A with the TPU0A instruction. The TAPU0 instruction
can be used to transfer the contents of register PU0 to register A.
Table 2.6.5 shows the pull-up control register PU0.
Table 2.6.5 Pull-up control register PU0
Pull-up control register PU0
at reset : 00002
at power down : state retained
R/W
Pull-up transistor OFF, no key-on wakeup
Pull-up transistor ON, key-on wakeup
Pull-up transistor OFF, no key-on wakeup
Pull-up transistor ON, key-on wakeup
Pull-up transistor OFF, no key-on wakeup
Pull-up transistor ON, key-on wakeup
Pull-up transistor OFF, no key-on wakeup
Pull-up transistor ON, key-on wakeup
Port P13 pull-up transistor
control bit
Port P12 pull-up transistor
control bit
Port P11 pull-up transistor
control bit
Port P10 pull-up transistor
control bit
0
1
0
1
0
1
0
1
PU03
PU02
PU01
PU00
Note: “R” represents read enabled, and “W” represents write enabled.
相關(guān)PDF資料
PDF描述
M34551M4-XXXFP 4-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP48
M34552G8FP 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP48
M34552M8H-XXXFP 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP48
M34552G8HFP 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP48
M34556G8HFP 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO42
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M34551E8-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTER
M34551M4 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:4-BIT SINGLE-CHIP MICROCOMPUTER
M34551M4-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTER
M34551M8 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:4-BIT SINGLE-CHIP MICROCOMPUTER
M34552G8FP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER