SH7032 datasheet(39/687 Pages) RENESAS

39 / 687 page

Section 1 Overview

Rev. 7.00 Jan 31, 2006 page 13 of 658

REJ09B0272-0700

Type

Symbol

Pin No.

(PRQP0112

JA-A)

Pin No.

(PTQP0120

LA-A)

I/O Name and Function

Bus control

(cont)

WAIT

Wait: Requests the insertion of wait states

(TW) into the bus cycle when the external

address space is accessed.

RAS

Row address strobe: DRAM row-address

strobe timing signal.

CASH

Column address strobe high: DRAM column-

address strobe timing signal. Output to

access the upper eight data bits.

CASL

Column address strobe low: DRAM column-

address strobe timing. Output to access the

lower eight data bits.

Read: Indicates reading of data from an

external device.

WRH

Upper write: Indicates write access to the

upper eight bits of an external device.

WRL

Lower write: Indicates write access to the

lower eight bits of an external device.

CS0–

CS7

48–51,

53–56

51–54,

56–59

Chip select 0–7: Chip select signals for

accessing external memory and devices.

Address hold: Address hold timing signal for a

device using a multiplexed address/data bus.

HBS,

LBS

23, 58

24, 63

Upper/lower byte strobe: Upper and lower

byte strobe signals. (Also used as

WRH and

A0.)

Write: Brought low during write access. (Also

used as

WRL.)

DMAC

DREQ0,

DREQ1

67, 69

72, 74

DMA transfer request (channels 0 and 1):

Input pins for external DMA transfer requests.

DACK0,

DACK1

66, 68

71, 73

DMA transfer acknowledge (channels 0 and

1): Indicates that DMA transfer is

acknowledged.

TIOCA0,

TIOCB0

53, 55

56, 58

I/O ITU input capture/output compare (channel 0):

Input capture or output compare pins.

TIOCA1,

TIOCB1

64, 65

69, 70

I/O ITU input capture/output compare (channel 1):

Input capture or output compare pins.

TIOCA2,

TIOCB2

97, 98

103, 105

I/O ITU input capture/output compare (channel 2):

Input capture or output compare pins.

TIOCA3,

TIOCB3

100, 101

107, 108

I/O ITU input capture/output compare (channel 3):

Input capture or output compare pins.

16-bit

integrated

timer pulse

unit (ITU)

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