AT89C51AC3-RLTIM Atmel, AT89C51AC3-RLTIM Datasheet - Page 111
AT89C51AC3-RLTIM
Manufacturer Part Number
AT89C51AC3-RLTIM
Description
IC 8051 MCU FLASH 64K 44VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51AC3-RLTUM.pdf
(140 pages)
Specifications of AT89C51AC3-RLTIM
Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
36
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
2.25K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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4383D–8051–02/08
Table 60. ADCLK Register
ADCLK (S:F2h)
ADC Clock Prescaler
Reset Value = XXX0 0000b
Note:
Table 61. ADDH Register
ADDH (S:F5h Read Only)
ADC Data High Byte Register
Reset Value = 00h
Table 62. ADDL Register
ADDL (S:F4h Read Only)
ADC Data Low Byte Register
Number
Number
ADAT 9
Bit
Bit
7-5
4-0
7-0
7
7
7
-
-
1. In X1 mode:
For PRS > 0 F
For PRS = 0 F
In X2 mode:
For PRS > 0 F
For PRS = 0 F
Mnemonic Description
Mnemonic Description
ADAT 8
ADAT9:2
PRS4:0
Bit
Bit
6
6
6
-
-
-
Reserved
The value read from these bits are indeterminate. Do not set these bits.
Clock Prescaler
See Note
ADC result
bits 9-2
ADAT 7
ADC
ADC
ADC
ADC
5
5
5
-
-
= FXTAL
= FXTAL
= FXTAL
= FXTAL
4xPRS
128
2xPRS
64
(1)
ADAT 6
PRS 4
4
4
4
-
ADAT 5
PRS 3
3
3
3
-
ADAT 4
PRS 2
2
2
2
-
ADAT 3
ADAT 1
PRS 1
1
1
1
ADAT 2
ADAT 0
PRS 0
0
0
0
111
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