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MC912XDP512F0CALR Datasheet(PDF) 58 Page - Freescale Semiconductor, Inc

No. de Pieza. MC912XDP512F0CALR
Descripción  HCS12X Microcontrollers
Descarga  1348 Pages
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Fabricante  FREESCALE [Freescale Semiconductor, Inc]
Página de inicio  http://www.freescale.com
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MC912XDP512F0CALR Datasheet(HTML) 58 Page - Freescale Semiconductor, Inc

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Chapter 1 Device Overview MC9S12XD-Family
MC9S12XDP512 Data Sheet, Rev. 2.21
58
Freescale Semiconductor
The XCLKS signal selects the oscillator configuration during reset low phase while a clock quality check
is ongoing. This is the case for:
Power on reset or low-voltage reset
Clock monitor reset
Any reset while in self-clock mode or full stop mode
The selected oscillator configuration is frozen with the rising edge of reset.
The pin can be configured to drive the internal system clock ECLKX2.
Figure 1-11. Loop Controlled Pierce Oscillator Connections (PE7 = 1)
Figure 1-12. Full Swing Pierce Oscillator Connections (PE7 = 0)
Figure 1-13. External Clock Connections (PE7 = 0)
1.2.3.17
PE6 / MODB / TAGHI — 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 an input with a
MCU
EXTAL
XTAL
VSSPLL
Crystal or
Ceramic Resonator
C2
C1
MCU
EXTAL
XTAL
RS
RB
VSSPLL
Crystal or
Ceramic Resonator
C2
C1
MCU
EXTAL
XTAL
CMOS-Compatible
External Oscillator
Not Connected


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