em78p131a ELAN Microelectronics Corp, em78p131a Datasheet - Page 34

• Manufacturer Part Number: em78p131a
• Description: 8-bit Microcontroller With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

EM78P131A
8-Bit Microcontroller with OTP ROM
30 •
The capacitor C will discharge rapidly and fully. Rin, th
prevent high current or ESD (electros
5.12 Residue-V ltage Protection
When the battery is repl ed, the device p
remains. The residue-voltage may trip below the minimum Vdd, but not to zero. This
condition may cause a poor power-on
recommended methods o
EM78P131A.
Note: * Figure 5-15 and Figure 5-16 should be designed with their /RESET pin voltage larger than VIH(mi
* Figure 5-15 Residue Voltage Protection Circuit 1
* Figure 5-
/RESET
o
ac
/RESET
n how to bu
VDD
VDD
16 Residue Voltage Protection Circuit 2
100K
Q1
Q1
R3
(This specification is subject to change without further notice)
tatic discharge) fro
ild a residue-voltage protection circuit for
reset. The following figures illustrate two
ower (Vd
Product Specification (V1.2) 09.16.2009
d) is cut off but residue-voltage
10K
e current-limited resistor, will
1N4684
m flowing to pin /RESET.
33K
R1
R2
VDD
VDD
n).