
Chapter 1 MC9S12E128 Device Overview (MC9S12E128DGV1)
MC9S12E128 Data Sheet, Rev. 1.07
62
Freescale Semiconductor
1.3.2
Signal Properties Summary
Table 1-4. Signal Properties
Pin Name
Function 1
Pin Name
Function 2
Pin Name
Function 3
Power
Domain
Internal Pull Resistor
Description
CTRL
Reset State
EXTAL
—
VDDPLL
NA
Oscillator pins
XTAL
—
VDDPLL
NA
XFC
—
VDDPLL
NA
PLL loop lter pin
RESET
—
VDDX
None
External reset pin
BKGD
MODC
TAGHI
VDDX
Up
Background debug, mode pin, tag signal
high
TEST
VPP
—
NA
Test pin only
PAD[15,13,
12,8,6,4,2,0]
AN[15,13,
12,8,6,4,2,0]
KWAD[15,13,
12,8,6,4,2,0]
VDDX
PERAD/
PPSAD
Disabled
Port AD I/O Pins, ATD inputs, keypad
Wake-up
PAD[14,11,
10,9,7,5,3,1]
AN[14,11,
10,9,7,5,3,1]
KWAD[14,11,
10,9,7,5,3,1]
VDDX
PERAD/
PPSAD
Disabled
Port AD I/O Pins, ATD inputs, keypad
Wake-up
PA[7:0]
ADDR[15:8]/
DATA[15:8]
—
VDDX
PUCR
Disabled
Port A I/O pin, multiplexed
address/data
PB[7:0]
ADDR[7:0]/
DATA[7:0]
—
VDDX
PUCR
Disabled
Port B I/O pin, multiplexed
address/data
PE7
NOACC
XCLKS
VDDX
Input
Port E I/O pin, access, clock select
PE6
IPIPE1
MODB
VDDX
While RESET is low:
Down
Port E I/O pin, pipe status, mode
selection
PE5
IPIPE0
MODA
VDDX
While RESET is low:
Down
Port E I/O pin, pipe status, mode
selection
PE4
ECLK
—
VDDX
PUCR
Mode Dep1
Port E I/O pin, bus clock output
PE3
LSTRB
TAGLO
VDDX
PUCR
Port E I/O pin, low strobe, tag signal
low
PE2
R/W
—
VDDX
PUCR
Port E I/O pin, R/W in expanded modes
PE1
IRQ
—
VDDX
PUCR
Up
Port E input, external interrupt pin
PE0
XIRQ
—
VDDX
PUCR
Up
Port E input, non-maskable interrupt pin
PK[7]
ECS
ROMCTL
VDDX
PUCR
Up
Port K I/O Pin, Emulation Chip Select
PK[6]
XCS
—
VDDX
PUCR
Up
Port K I/O Pin, External Chip Select
PK[5:0]
XADDR[19:14]
—
VDDX
PUCR
Up
Port K I/O Pins, Extended Addresses
PM7
SCL
—
VDDX
PERM/
PPSM
Up
Port M I/O Pin, IIC SCL signal
PM6
SDA
—
VDDX
PERM/
PPSM
Up
Port M I/O Pin, IIC SDA signal
PM5
TXD2
—
VDDX
PERM/
PPSM
Up
Port M I/O Pin, SCI2 transmit signal
PM4
RXD2
—
VDDX
PERM/
PPSM
Up
Port M I/O Pin, SCI2 receive signal
PM3
—
VDDX
PERM/
PPSM
Disabled
Port M I/O Pin
PM1
DAO1
—
VDDX
PERM/
PPSM
Disabled
Port M I/O Pin, DAC1 output