參數(shù)資料
型號: 9S12B128DGV1
英文描述: 9S12B128 Device Guide
中文描述: 9S12B128設備指南
文件頁數(shù): 54/128頁
文件大?。?/td> 1823K
代理商: 9S12B128DGV1
Device User Guide — 9S12B128DGV1/D V01.11
54
Figure 2-5 Pierce Oscillator Connections (PE7=0)
Figure 2-6 External Clock Connections (PE7=0)
2.2.11 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-downdevicewhichisonlyactive
when RESET is low.
2.2.12 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-downdevicewhichisonlyactive
when RESET is low.
2.2.13 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
4
C
3
* Rs can be zero (shorted) when used with higher frequency crystals.
Refer to manufacturer’s data.
MCU
EXTAL
XTAL
CMOS-COMPATIBLE
EXTERNAL OSCILLATO
R
(V
DDPLL
-Level)
not connected
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