Datasheet

170
AT89C51CC03
4182O–CAN–09/08
Power Fail Detect at Ambiant
Temperatures
Note: 1. Threshold Voltage for PFD Release
2. Threshold Voltage for PFD Activation
Figure 78. I
CC
Test Condition, Active Mode
Figure 79. I
CC
Test Condition, Idle Mode
Figure 80. I
CC
Test Condition, Power-Down Mode
VPFDP
(1)
VPFDM
(2)
Hysterisis
2.5V typ 2.35V typ 100mV min.
EA
V
CC
V
CC
I
CC
(NC)
CLOCK
SIGNAL
V
CC
All other pins are disconnected.
RST
XTAL2
XTAL1
V
SS
V
CC
P0
RST
EA
XTAL2
XTAL1
V
SS
V
CC
V
CC
I
CC
(NC)
P0
V
CC
All other pins are disconnected.
CLOCK
SIGNAL
RST
EA
XTAL2
XTAL1
V
SS
V
CC
V
CC
I
CC
(NC)
P0
V
CC
All other pins are disconnected.