參數(shù)資料
型號: MC9S12H256VFVR2
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, PQFP144
封裝: LQFP-144
文件頁數(shù): 81/131頁
文件大?。?/td> 2133K
代理商: MC9S12H256VFVR2
MC9S12H256 Device User Guide — V01.16
53
2.3 Detailed Signal Descriptions
2.3.1 EXTAL, XTAL — Oscillator Pins
EXTAL and XTAL are the crystal driver and external clock pins. On reset all the device clocks are derived
from the EXTAL input frequency. XTAL is the crystal output.
2.3.2 RESET — External Reset Pin
An active low bidirectional control signal, it acts as an input to initialize the MCU to a known start-up
state, and an output when an internal MCU function causes a reset.
PS5
MOSI
VDDX2
Port S I/O, MOSI of SPI
PS4
MISO
VDDX2
Port S I/O, MISO of SPI
PS3
TXD1
VDDX2
Port S I/O, TXD of SCI1
PS2
RXD1
VDDX2
Port S I/O, RXD of SCI1
PS1
TXD0
VDDX2
Port S I/O, TXD of SCI0
PS0
RXD0
VDDX2
Port S I/O, RXD of SCI0
PT[7:4]
IOC[7:4]
VDDX1
Port T I/O, Timer channels
PT[3:0]
IOC[3:0]
FP[27:24]
VDDX1
Port T I/O, Timer channels, LCD driver
PU[3:0]
M0C0M
M0C0P
M0C1M
M0C1P
VDDM
Port U I/O, Motor0 of MC
PU[7:4]
M1C0M
M1C0P
M1C1M
M1C1P
VDDM
Port U I/O, Motor1 of MC
PV[3:0]
M2C0M
M2C0P
M2C1M
M2C1P
VDDM
Port V I/O, Motor2 of MC
PV[7:4]
M3C0M
M3C0P
M3C1M
M3C1P
VDDM
Port V I/O, Motor3 of MC
PW[3:0]
M4C0M
M4C0P
M4C1M
M4C1P
VDDM
Port W I/O, Motor4 of MC
PW[7:4]
M5C0M
M5C0P,
M5C1M
M5C1P
VDDM
Port W I/O, Motor5 of MC
Pin Name
Function 1
Pin Name
Function 2
Pin Name
Function 3
Pin Name
Function 4
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