AT89LP6440-20PU Atmel, AT89LP6440-20PU Datasheet - Page 140
AT89LP6440-20PU
Manufacturer Part Number
AT89LP6440-20PU
Description
MCU 8051 64K FLASH ISP 40PDIP
Manufacturer
Atmel
Series
89LPr
Datasheet
1.AT89LP6440-20MU.pdf
(194 pages)
Specifications of AT89LP6440-20PU
Core Processor
8051
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
38
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
8K x 8
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
2.4 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Table 20-5.
140
Symbol
ACON
IREF
DIFF
TRG[1-0]
ACS [2-0]
DADI = DAH
Not Bit Addressable
Bit
AT89LP6440 - Preliminary
Function
Analog Input Connect. When cleared, the analog inputs are disconnected from the ADC. When set, the analog inputs
selected by ACS
0
Internal Reference Enable. When set, the DADC uses the internal voltage reference. When cleared the DADC uses
AVDD for its reference.
Differential Mode Enable. Set to configure the ADC in differential mode. Clear to configure the ADC in single-ended
mode.
Trigger Select.
TRG1
0
0
1
1
DADC Channel Select
DIFF
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
).
DADI
ACON
7
– DADC Input Control Register
TRG0
0
1
0
1
ACS2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
2-0
IREF
6
are connected to the ADC. ACON must be zero when changing the input channel multiplexor (ACS
Trigger
Software (GO bit)
Timer 0 Overflow
Timer 1 Overflow
Timer 2 Overflow
ACS1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
TRG1
5
ACS0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
V+
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P0.0
P0.2
P0.4
P0.6
reserved
reserved
reserved
reserved
TRG0
4
V-
AVDD/2
AVDD/2
AVDD/2
AVDD/2
AVDD/2
AVDD/2
AVDD/2
AVDD/2
P0.1
P0.3
P0.5
P0.7
DIFF
3
ACS2
2
Reset Value = 0000 0000B
ACS1
1
ACS0
3706A–MICRO–9/09
0
2-
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