Reset Module - Renesas CPU Board M3A-HS19 User Manual

2

2.10 Reset Module

Reset module controls reset signals connected to the SH7619 MCU, a flash memory and connectors. Software controls to
reset PCMCIA connector.
Figure 2.10.1 shows the schematic diagram of resets.
Reset IC output delay time: td = 0.34×Cd(pF)µsec ＝ 34 ms
Reset IC output detect voltage: Vs = 1.25×
3.3 V
*
Open collector output
Reset
Ω
Ra 10
K
M51957BFP(U13)
Input
Delay capacitor
Rb 10 Ω
K
Rev.1.01 Oct 28, .2008
REJ10J1351-0101
) )
Ra+Rb
= 2.5 V
Rb
3.3 V
IC
LVC14(U14)
*
Output
100 Ω
Cd
0.1 µF
SW2
Reset switch
Figure 2.10.1 M3A-HS19 Reset System
S08(U15)
RESET_IN(J9-1)
JP2
1OE#
2OE#
Bus switch
Features and Specifications
2.10 Reset Module
H-UDI connector
RESET#
Expansion connector
RESET#
Flash memory
RESET#
SH7619
RES#
PC09/RX_ER
PC20/WOL
RESET
PCMCIA(J4)
(U9)
2-21