H8SLASH3021 datasheet(36/712 Pages) RENESAS

36 / 712 page

1. Overview

Rev.2.00 Mar. 22, 2007 Page 12 of 684

REJ09B0352-0200

Type

Symbol

Pin No.

I/O

Name and Function

System

control

RES

Input

Reset input: When driven low, this pin

resets the chip

RESO/

FWE

Output/

Input

Reset output (Mask ROM version):

Outputs WDT-generated reset signal to an

external device.

Write enable signal (F-ZTAT version):

Flash memory write control signal.

STBY

Input

Standby: When driven low, this pin forces a

transition to hardware standby mode

Interrupts

NMI

Input

Nonmaskable interrupt: Requests a

nonmaskable interrupt

IRQ

5, IRQ4

IRQ

1, IRQ0

72, 11,

69, 68

Input

Interrupt request 5, 4, 1, 0: Maskable

interrupt request pins

Address bus A

23 to A20,

19 to A8,

7 to A0

77 to 80,

42 to 31,

29 to 22

Output

Address bus: Outputs address signals

Data bus

7 to D0

20 to 13

Input/

output

Data bus: Bidirectional data bus

Bus control

Output

Address strobe: Goes low to indicate valid

address output on the address bus

Output

Read: Goes low to indicate reading from

the external address space.

Output

Write: Goes low to indicate writing to the

external address space indicates valid data

on the data bus.

WAIT

Input

Wait: Requests insertion of wait states in

bus cycles during access to the external

address space

H8/3021 Datasheet(PDF) 36 Page - Renesas Technology Corp

H8/3021 Datasheet(HTML) 36 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL