Datasheet

123
AT89C51AC3
4383D–8051–02/08
Figure 65. I
CC
Test Condition, Idle Mode
Figure 66. I
CC
Test Condition, Power-Down Mode
Figure 67. Clock Signal Waveform for I
CC
Tests in Active and Idle Modes
DC Parameters for A/D
Converter
Table 72. DC Parameters for AD Converter in Precision Conversion
Note: 1. Typicals are based on a limited number of samples and are not guaranteed.
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.
V
CC
-0.5V
0.45V
0.7V
CC
0.2V
CC
-0.1
T
CLCH
T
CHCL
T
CLCH
= T
CHCL
= 5ns.
Symbol Parameter Min Typ
(1)
Max Unit Test Conditions
AVin Analog input voltage Vss- 0.2 Vref + 0.2 V
Rref Resistance between Vref and Vss 12 16 24 k Ω
Vref Reference voltage 2.40 3.00 V
Cai Analog input Capacitance 60 pF During sampling
Rai Analog input Resistor 400 Ω During sampling
INL Integral non linearity 1 2 lsb
DNL Differential non linearity 0.5 1 lsb
OE Offset error -2 2 lsb