AT89C51AC3 Atmel Corporation, AT89C51AC3 Datasheet - Page 123

• Manufacturer Part Number: AT89C51AC3
• Manufacturer: Atmel Corporation

Specifications of AT89C51AC3

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 2.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

DC Parameters for A/D
Converter
4383D–8051–02/08
Figure 65. I
Figure 66. I
Figure 67. Clock Signal Waveform for I
Table 72. DC Parameters for AD Converter in Precision Conversion
Note:
Symbol Parameter
AVin
Rref
DNL
Vref
Cai
Rai
INL
OE
1. Typicals are based on a limited number of samples and are not guaranteed.
Analog input voltage
Resistance between Vref and Vss
Reference voltage
Analog input Capacitance
Analog input Resistor
Integral non linearity
Differential non linearity
Offset error
(NC)
CC
CC
CLOCK
SIGNAL
Test Condition, Idle Mode
Test Condition, Power-Down Mode
(NC)
RST
XTAL2
XTAL1
V
SS
V
CC
T
V
RST
XTAL2
XTAL1
V
-0.5V
0.45V
CHCL
EA
SS
CC
I
P0
CC
T
CLCH
V
V
CC
EA
CC
P0
V
I
CC
= T
CC
V
CHCL
CC
Vss- 0.2
CC
V
Min
2.40
CC
12
-2
= 5ns.
Tests in Active and Idle Modes
T
CLCH
0.7V
Typ
All other pins are disconnected.
0.2V
0.5
16
60
All other pins are disconnected.
1
(1)
CC
CC
-0.1
Vref
Max
3.00
400
24
2
1
2
+ 0.2
Unit
kΩ
pF During sampling
lsb
lsb
lsb
Ω
V
V
During sampling
Test Conditions
123