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M68HC08 Datasheet(PDF) 38 Page - Freescale Semiconductor, Inc

Part # M68HC08
Description  MC68HC908JB16 Technical Data
PDF  332 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

M68HC08 Datasheet(HTML) 38 Page - Freescale Semiconductor, Inc

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General Description
Technical Data
MC68HC908JB16 — Rev. 1.1
38
General Description
Freescale Semiconductor
Summary of the pin functions are provided in Table 1-1.
Table 1-1. Summary of Pin Functions
PIN NAME
PIN DESCRIPTION
IN/OUT
VOLTAGE
LEVEL
VDD
Power supply.
IN
4.0 to 5.5V
VSS
Power supply ground.
OUT
0V
VREG
3.3V regulated output from MCU.
OUT
VREG (3.3V)
RST
Reset input, active low.
With internal pull-up and schmitt trigger input.
IN/OUT
VDD
IRQ
External IRQ pin; with programmable internal pull-up and
schmitt trigger input.
IN
VDD
Used for mode entry selection.
IN
VREG to VTST
OSC1
Crystal oscillator input.
IN
VREG
OSC2
Crystal oscillator output; inverting of OSC1 signal.
OUT
VREG
VDDA
(1)
Analog power supply.
IN
4.0 to 5.5V
VSSA0
(1)
VSSA1
(1)
Analog power supply ground.
OUT
0V
VREGA0
(1)
3.3V regulated output from MCU.
OUT
VREGA0 (3.3V)
VREGA1
(1)
3.3V input for CGM2.
IN
VREGA0
CGMXFC1(1)
CGM1 external filter capacitor connection.
OUT
VREGA0
CGMXFC2(1)
CGM2 external filter capacitor connection.
OUT
VREGA0
CGMOUT1(1)
CGM1 clock output.
OUT
VREGA0
CGMOUT2(1)
CGM2 clock output.
OUT
VREGA0
PTA0/KBA0
:
PTA7/KBA7
8-bit general purpose I/O port.
IN/OUT
VDD
Pins as keyboard interrupts, KBA0–KBA7.IN
VDD
Each pin has programmable internal pullup when configured
as input.
IN
VDD



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