Datasheet

General Description
MC68HC908AB32 — Rev. 1.1 Technical Data
Freescale Semiconductor General Description
39
Details of the clock connections to each of the modules on the
MC68HC908AB32 are shown in Table 1-2. A short description of each
clock source is also given in Table 1-3.
PTF4/TBCH0
General purpose I/O
/ Timer B channel 0
Dual State Yes Input (Hi-Z)
PTF3/TBCH3
General purpose I/O
/ Timer B channel 3
Dual State Yes Input (Hi-Z)
PTF2/TBCH2
General purpose I/O
/ Timer B channel 2
Dual State Yes Input (Hi-Z)
PTF1/TACH3
General purpose I/O
/ Timer A channel 3
Dual State Yes Input (Hi-Z)
PTF0/TACH2
General purpose I/O
/ Timer A channel 2
Dual State Yes Input (Hi-Z)
PTG2/KBD2–PTG0/KBD0
General purpose I/O with
key wakeup feature
Dual State Yes Input (Hi-Z)
PTH1/KBD4–PTH0/KBD3
General purpose I/O with
key wakeup feature
Dual State Yes Input (Hi-Z)
V
DD
Logical chip power supply NA NA NA
V
SS
Logical chip ground NA NA NA
V
DDA
Analog power supply (CGM) NA NA NA
V
SSA
Analog ground (CGM) NA NA NA
V
REFH
ADC reference voltage NA NA NA
A
VSS
/V
REFL
ADC ground and reference
voltage
NA NA NA
V
DDAREF
ADC power supply NA NA NA
OSC1 External clock in NA NA Input (Hi-Z)
OSC2 External clock out NA NA Output
CGMXFC PLL loop filter cap NA NA NA
IRQ
External interrupt request NA NA Input (pullup)
RST
Reset NA NA Input (pullup)
Table 1-1. I/O Pins Summary
Pin Name Function Driver Type Hysteresis Reset State