beautypg.com

6 reset module, Functional overview – Renesas SH7149 User Manual

Page 26

background image

Functional Overview

2.6 Reset Module

REJ10J0917-0100

2

2.6 Reset Module

This module controls the reset signal connected to the SH7149 mounted on the M3A-HS49.

Figure2.6.1 shows the block diagram of reset module in the M3A-HS49.

Vcc

Delay capacitance

Input

Output

Ra

Reset IC
M51957BP

Open-collector output

SH7149

Rb

Vcc

Cd

0.1uF

Reset switch
SW2

RESET

Extension connector(J9,10)

Reset IC output delay time,td = 0.34×Cd(pF)usec = 34ms
Reset IC output detection voltage,Vs = 1.25 × (Ra+Rb)/Rb = 3.75V

Extension
Connector (J14)

RES

H-UDI connector(J1,J2)

RES

20K

10K

Ω

Ω

Figure2.6.1 Block Diagram of Reset Module

Rev.1.0 Dec 15, 2006

2-8

This manual is related to the following products:
See also other documents in the category Renesas Hardware: