Renesas SH7149 Manual Do Utilizador

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 

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