參數(shù)資料
型號(hào): MC9S12GC128CPB25
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP52
封裝: LQFP-52
文件頁數(shù): 93/138頁
文件大小: 2318K
代理商: MC9S12GC128CPB25
Device User Guide — 9S12C128DGV1/D V01.07
56
2.2.1 Pin Initialization for 48 & 52 Pin LQFP bond-out versions
Not Bonded Pins If the port pins are not bonded out in the chosen package the user should initialize the
registers to be inputs with enabled pull resistance to avoid excess current consumption. This applies to the
following pins:
(48LQFP): Port A[7:1], Port B[7:5], Port B[3:0], PortE[6,5,3,2], Port P[7:6], PortP[4:0], Port J[7:6],
PortS[3:2]
(52LQFP): Port A[7:3], Port B[7:5], Port B[3:0], PortE[6,5,3,2], Port P[7:6], PortP[2:0], Port J[7:6],
PortS[3:2]
PP[2:0]
KWP[2:0]
PW[2:0]
VDDX
PERP/
PPSP
Disabled Port P I/O Pins, keypad wake-up, PWM outputs
PJ[7:6]
KWJ[7:6]
VDDX
PERJ/
PPSJ
Disabled Port J I/O Pins and keypad wake-up
PM5
SCK
VDDX
PERM/
PPSM
Up
Port M I/O Pin and SPI SCK signal
PM4
MOSI
VDDX
PERM/
PPSM
Up
Port M I/O Pin and SPI MOSI signal
PM3
SS
VDDX
PERM/
PPSM
Up
Port M I/O Pin and SPI SS signal
PM2
MISO
VDDX
PERM/
PPSM
Up
Port M I/O Pin and SPI MISO signal
PM1
TXCAN
VDDX
PERM/
PPSM
Up
Port M I/O Pin and CAN transmit signal2
PM0
RXCAN
VDDX
PERM/
PPSM
Up
Port M I/O Pin and CAN receive signal2
PS[3:2]
VDDX
PERS/
PPSS
Up
Port S I/O Pins
PS1
TXD
VDDX
PERS/
PPSS
Up
Port S I/O Pin and SCI transmit signal
PS0
RXD
VDDX
PERS/
PPSS
Up
Port S I/O Pin and SCI receive signal
PT[7:5]
IOC[7:5]
VDDX
PERT/
PPST
Disabled
Port T I/O Pins shared with timer (TIM)
PT[4:0]
IOC[4:0]
PW[4:0]
VDDX
PERT/
PPST
Disabled
Port T I/O Pins shared with timer and PWM
NOTES:
1. The PortE output buffer enable signal control at reset is determined by the PEAR register and is mode dependent. E.g. in
special test mode RDWE=LSTRE=1 which enables the PE[3:2] output buffers and disables the pull-ups. Refer to S12_MEBI
user guide for PEAR register details.
2. CAN functionality is not available on the MC9S12GC-Family members
Pin Name
Function 1
Pin Name
Function 2
Pin Name
Function 3
Power
Domain
Internal Pull
Resistor
Description
CTRL
Reset
State
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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