![](http://datasheet.mmic.net.cn/Freescale-Semiconductor/MC56F8257VLH_datasheet_98710/MC56F8257VLH_22.png)
MC56F825x/MC56F824x Digital Signal Controller, Rev. 3
Signal/Connection Descriptions
Freescale Semiconductor
22
GPIOB4
(ANB4&
CMPC_M1)
14
21
Input/
Output
Input
Input,
internal
pullup
enabled
Port B GPIO — This GPIO pin can be individually programmed as
an input or output pin.
ANB4 and CMPC_M1 — Analog input to channel 4 of ADCB and
negative input 1 of analog comparator C.
After reset, the default state is GPIOB4.
GPIOB5
(ANB5&
CMPC_M2)
20
Input/
Output
Input
Input,
internal
pullup
enabled
Port B GPIO — This GPIO pin can be individually programmed as
an input or output pin.
ANB5 and CMPC_M2 — Analog input to channel 5 of ADCB and
negative input 2 of analog comparator C.
After reset, the default state is GPIOB5.
GPIOB6
(ANB6&
CMPB_M1)
19
Input/
Output
Input
Input,
internal
pullup
enabled
Port B GPIO — This GPIO pin can be individually programmed as
an input or output pin.
ANB6 and CMPB_M1 — Analog input to channel 6 of ADCB and
negative input 1 of analog comparator B.
After reset, the default state is GPIOB6.
GPIOB7
(ANB7&
CMPB_M2)
17
Input/
Output
Input
Input,
internal
pullup
enabled
Port B GPIO — This GPIO pin can be individually programmed as
an input or output pin.
ANB7 and CMPB_M2 — Analog input to channel 7 of ADCB and
negative input 2 of analog comparator B.
After reset, the default state is GPIOB7.
GPIOC0
XTAL
CLKIN
333
Input/
Output
Analog
Output
Input
Input,
internal
pullup
enabled
Port C GPIO — This GPIO pin can be individually programmed as
an input or output pin.
XTAL — External Crystal Oscillator Output. This output connects
the internal crystal oscillator output to an external crystal or ceramic
resonator.
CLKIN — This pin serves as an external clock input.1
After reset, the default state is GPIOC0.
GPIOC1
(EXTAL)
444
Input/
Output
Analog
Input
Input,
internal
pullup
enabled
Port C GPIO — This GPIO pin can be individually programmed as
an input or output pin.
EXTAL — External Crystal Oscillator Input. This input connects the
internal crystal oscillator input to an external crystal or ceramic
resonator.
After reset, the default state is GPIOC1.
Table 5. MC56F825x/MC56F824x Signal and Package Information (continued)
Signal
Name
44
LQFP
48
LQFP
64
LQFP
Type
State
During
Reset
Signal Description