Rainbow Electronics ATmega8HVD - Manual (Page 141)

141
8052B–AVR–09/08
ATmega4HVD/8HVD
25. Operating Circuit
Figure 25-1. Operating Circuit Diagram
Notes: 1. Optional. The chip can operate without Charge FET.
2. Optional. Only needed for External Protection Input.
3. Optional. Only if external thermistor is used.
R
P
ATmega4HVD/8HVD
VFET
+
PV1
NI
VREG
PB2
PB1
PB0
PC1
GND
10m
470
CREG
2.2 uF
0.1uF
PC0
BATT +
BATT -
R
DF
1k
OD BATT
R
BATT
1k
C
P
-
VCC
CVCC
0.1 uF
R
DF
1k
OC
R
Z
SPI-programming
R
PD
RESET
GND
(1)
(External Protection Input)
(Serial Communication)
R
SENSE
(ADC0)
(SGND)
R
ADC
R
T
(3)
(2)