Datasheet

ManualsBrandsNXP SEMICONDUCTORS ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller LQFP 144 (20x20) 32-Bit 16 MHz I/O number 18

MC68331TS/D 11

2.5 Signal Function

DSACK[1:0]

SIM Input 0

DSCLK CPU32 Input Serial Clock

DSI CPU32 Input (Serial Data)

DSO CPU32 Output (Serial Data)

EXTAL SIM Input —

FC[2:0] SIM Output —

FREEZE SIM Output 1

HALT

SIM Input/Output 0

IC[4:1] GPT Input —

IFETCH

CPU32 Output —

IPIPE

CPU32 Output —

IRQ[7:1]

SIM Input 0

MISO QSM Input/Output —

MODCLK SIM Input —

MOSI QSM Input/Output —

OC[5:1] GPT Output —

PAI GPT Input —

PC[6:0] SIM Output (Port)

PCS[3:0] QSM Input/Output —

PE[7:0] SIM Input/Output (Port)

PF[7:0] SIM Input/Output (Port)

PQS[7:0] QSM Input/Output (Port)

PCLK GPT Input —

PWMA, PWMB GPT Output —

QUOT SIM Output —

RESET

SIM Input/Output 0

RMC

SIM Output 0

R/W

SIM Output 1/0

RXD QSM Input —

SCK QSM Input/Output —

SIZ[1:0] SIM Output —

QSM Input 0

TSC SIM Input —

TXD QSM Output —

XFC SIM Input —

XTAL SIM Output —

Table 6 MCU Signal Function

Signal Name Mnemonic Function

Address Bus ADDR[23:0] 24-bit address bus

Address Strobe AS

Indicates that a valid address is on the address bus

Autovector AVEC

Requests an automatic vector during interrupt acknowledge

Bus Error BERR

Indicates that a bus error has occurred

Bus Grant BG

Indicates that the MCU has relinquished the bus

Bus Grant Acknowledge BGACK

Indicates that an external device has assumed bus mastership

Breakpoint BKPT

Signals a hardware breakpoint to the CPU

Bus Request BR

Indicates that an external device requires bus mastership

System Clockout CLKOUT System clock output

Chip Selects CS[10:0]

Select external devices at programmed addresses

Table 5 MCU Signal Characteristics (Continued)

Signal Name MCU Module Signal Type Active State

Freescale Semiconductor, I

Freescale Semiconductor, Inc.

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