Renesas SH7149 Manual Do Utilizador

Functional Overview

2.2 CPU

Rev.1.0 Dec 15, 2006

2-3

REJ10J0917-0100

2.2 CPU

The M3A-HS49 contains the 32-bit RISC microcomputer SH7149 that operates with a maximum 80MHz of CPU

clock frequency. The SH7149 includes 256-Kbyte flash memory, and 8-Kbyte SRAM, making it useful in a wide range

of applications from data processing to equipment control.

The M3A-HS49 can be operated with a maximum 80MHz of CPU clock frequency (external bus 40MHz, max) using

a 10MHz input clock.

Figure2.2.1 shows the block diagram of SH7149 in the M3A-HS49.

EXTAL
XTAL
PA15/CK

MD1
MD0
FWE

WDTOVF
RES

Clock

Mode

System

Control

NMI

NMI switch

PF0/AN0
PF2/AN2
PF4/AN4
PF6/AN6
PF8/AN8
PF9/AN9
PF10/AN10
PF11/AN11
PF12/AN12
PF13/AN13
PF14/AN14
PF15/AN15

A/D

Converter

SH7149

PA0/A0
PA1/A1
PA2/A2
PA3/A3
PA4/A4
PA5/A5

PA10/A6
PA11/A7
PA12/A8
PA13/A9

PA14/A10

PE4/A11
PE5/A12
PE6/A13
PE7/A14
PE8/A15

PB2/A16
PB3/A17
PB4/A18
PB5/A19

Address bus

PD0/D0
PD1/D1
PD2/D2
PD3/D3
PD4/D4
PD5/D5
PD6/D6
PD7/D7
PD8/D8
PD9/D9

PD10/D10
PD11/D11
PD12/D12
PD13/D13
PD14/D14
PD15/D15

Data bus

PE10/CS0
PA6/RD
PA7/WRH
PA8/WRL
PA9/WAIT

Bus

Control

PE0
PE9
PE11
PE12
PE14
PE15

User

LED

PB0
PB16
PB17
PB18

User DIP Switch

PB1/BREQ/TIC5W
PE3/TIOC0D/SCK0
PE2/TIOC0C/TXD0
PE1/TIOC0B/RXD0

GPIO/SCI/
MTU2

RXD1

TXD1

Serial Port

Connector

AUDATA0

H-UDI

Connector

IRQ0

IRQ0 Switch

AUDATA1
AUDATA2
AUDATA3

H-UDI

Connector

AUDCK

AUDSYNC

PE19/TDO

PE18/TDI

PE17/TCK

PE16/ASEBRKAK/ASEBRK

ASEMD0

PE21/TRST

PE20/TMS

H-UDI
Connector

MRES switch

PE13/MRES

Figure2.2.1 Block Diagram of SH7149