參數(shù)資料
型號： MC68B912B32
廠商： Motorola, Inc.
英文描述： 2.5V 100ppm/Degrees C, 50uA in SOT23-3 Series (Bandgap) Voltage Reference 3-SOT-23 -40 to 125
中文描述： 16位微控制器
文件頁數(shù)： 19/128頁
文件大?。?/td> 748K
代理商： MC68B912B32
MC68HC912B32
MC68HC912B32TS/D
MOTOROLA
19
3.5 Port Pull-Up, Pull-Down and Reduced Drive
MCU ports can be configured for internal pull-up. To reduce power consumption and RFI, the pin output
drivers can be configured to operate at a reduced drive level. Reduced drive causes a slight increase
in transition time depending on loading and should be used only for ports which have a light loading.
Table 7
summarizes the port pull-up default status and controls.
Table 7 Port Pull-Up, Pull-Down and Reduced Drive Summary
Enable Bit
Reduced Drive Control Bit
Register
(Address)
RDRIV ($000D)
RDRIV ($000D)
Port
Name
Port A
Port B
Port E:
PE7, PE3,
PE2, PE0
PE1
PE[6:4]
PE[6:5]
Port P
Port S
PS[3:2]
PS[7:4]
Port T
Port DLC
Port AD
BKGD
Resistive
Input Loads
Pull-up
Pull-up
Register
(Address)
PUCR ($000C)
PUCR ($000C)
Bit Name Reset State
Bit Name
Reset
State
Full Drive
Full Drive
PUPA
PUPB
Disabled
Disabled
RDPA
RDPB
Pull-up
PUCR ($000C)
PUPE
Enabled
RDRIV ($000D)
RDPE
Full Drive
Pull-up
None
Pull-down
Pull-up
Pull-up
Pull-up
Pull-up
Pull-up
Pull-up
None
Pull-up
Always Enabled
—
Enabled During Reset
PWCTL ($0054)
PURDS ($00DB)
PURDS ($00DB)
PURDS ($00DB)
TMSK2 ($008D)
DLCSCR ($00FD) DLCPUE
RDRIV ($000D)
RDRIV ($000D)
—
PWCTL ($0054)
PURDS ($00DB)
PURDS ($00DB)
PURDS ($00DB)
TMSK2 ($008D)
DLCSCR ($00FD)
RDPE
RDPE
—
RDPP
RDPS0
RDPS1
RDPS2
RDPT
DLCRDV
—
—
Full Drive
Full Drive
—
Full Drive
Full Drive
Full Drive
Full Drive
Full Drive
Full Drive
PUPP
PUPS0
PUPS1
PUPS2
PUPT
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
—
—
—
Enabled
—
Full Drive
相關(guān)PDF資料
PDF描述
MC68C912B32FU8 16-Bit Microcontroller
MC68B912B32FU8 16-Bit Microcontroller
MC68C912B32CFU8 16-Bit Microcontroller
MC68CK338 Highly Integrated, Low-Power, 32-Bit Microcontroller
MC68EC060 32-Bit Microprocessors.(32位微處理器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68B912B32FU8 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:16-Bit Microcontroller
MC68BOOL 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-BIT MICROPROCESSING UNIT (MPU)
MC68BOOP 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-BIT MICROPROCESSING UNIT (MPU)
MC68BOOS 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-BIT MICROPROCESSING UNIT (MPU)
MC68C812A4 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Technical Supplement MC68C812A4 3.3V Electrical Characteristics
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