OVERVIEW MC68332
3-6 USER’S MANUAL
Table 3-1 MCU Driver Types
Type I/O Description
A O Output-only signals that are always driven; no external pull-up required
Aw O Type A output with weak P-channel pull-up during reset
B O Three-state output that includes circuitry to pull up output before high impedance is
established, to ensure rapid rise time. An external holding resistor is required to
maintain logic level while the pin is in the high-impedance state.
Bo O Type B output that can be operated in an open-drain mode
Table 3-2 MCU Pin Characteristics
Pin
Mnemonic
Output
Driver
Input
Synchronized
Input
Hysteresis
Discrete
I/O
Port
Designation
ADDR23/CS10
/ECLK A Y N O —
ADDR[22:19]/CS[9:6]
A Y N O PC[6:3]
ADDR[18:0] A Y N — —
AS
B Y N I/O PE5
AVEC
B Y N I/O PE2
BERR
B Y N — —
BG
/CS1 B — — — —
BGACK
/CS2 B Y N — —
BKPT
/DSCLK — Y Y — —
BR
/CS0 B Y N — —
CLKOUT A — — — —
CSBOOT
B — — — —
DATA[15:0]
1
Aw Y N — —
DS
B Y N I/O PE4
DSACK1
B Y N I/O PE1
DSACK0
B Y N I/O PE0
DSI/IFETCH
A Y Y — —
DSO/IPIPE
A — — — —
EXTAL
2
— — Special — —
FC[2:0]/CS[5:3]
A Y N O PC[2:0]
FREEZE/QUOT A — — — —
HALT
Bo Y N — —
IRQ[7:1]
B Y Y I/O PF[7:1]
MISO Bo Y Y I/O PQS0
MODCLK
1
B Y N I/O PF0
MOSI Bo Y Y I/O PQS1
PCS0/SS
Bo Y Y I/O PQS3
PCS[3:1] Bo Y Y I/O PQS[6:4]
R/W
A Y N — —
RESET
Bo Y Y — —
RMC
B Y N I/O PE3
RXD — N N — —
SCK Bo Y Y I/O PQS2
SIZ[1:0] B Y N I/O PE[7:6]
T2CLK — Y Y — —
TPUCH[15:0] A Y Y — —
TSC — Y Y — —
Fr
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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