參數(shù)資料
型號: MC9S12B128VPV16
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: microcontroller unit (MCU)
中文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP112
封裝: LQFP-112
文件頁數(shù): 58/124頁
文件大小: 2125K
代理商: MC9S12B128VPV16
MC9S12DP512 Device Guide V01.23
58
Figure 2-4 Pierce Oscillator Connections (PE7=0)
Figure 2-5 External Clock Connections (PE7=0)
2.3.14 PE6 / MODB / IPIPE1 — Port E I/O Pin 6
PE6 is a general purpose input or output pin. It is used as a MCU operating mode select pin during reset.
The state of this pin is latched to the MODB bit at the rising edge of RESET. This pin is shared with the
instructionqueuetrackingsignalIPIPE1.Thispinisaninputwithapull-downdevicewhichis onlyactive
when RESET is low.
2.3.15 PE5 / MODA / IPIPE0 — Port E I/O Pin 5
PE5 is a general purpose input or output pin. It is used as a MCU operating mode select pin during reset.
The state of this pin is latched to the MODA bit at the rising edge of RESET. This pin is shared with the
instructionqueuetrackingsignalIPIPE0.Thispinisaninputwithapull-downdevicewhichis onlyactive
when RESET is low.
2.3.16 PE4 / ECLK — Port E I/O Pin 4
PE4 is a general purpose input or output pin. It can be configured to drive the internal bus clock ECLK.
ECLK can be used as a timing reference.
MCU
EXTAL
XTAL
R
S*
R
B
VSSPLL
Crystal or
ceramic resonator
C
2
C
1
* Rs can be zero (shorted) when used with higher frequency crystals.
Refer to manufacturer’s data.
MCU
EXTAL
XTAL
CMOS-COMPATIBLE
EXTERNAL OSCILLATO
R
(VDDPLL-Level)
not connected
F
For More Information On This Product,
Go to: www.freescale.com
n
.
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