AT89LP6440-20PU Atmel, AT89LP6440-20PU Datasheet - Page 134
![MCU 8051 64K FLASH ISP 40PDIP](/photos/6/70/67049/453-40-dip_sml.jpg)
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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Figure 20-1. DADC Block Diagram
134
AVDD
AGND
ADC7
ADC6
ADC5
ADC4
ADC3
ADC2
ADC1
ADC0
AT89LP6440 - Preliminary
REFERENCE
INTERNAL
1.0V
8-BIT DATA BUS
R
R
AVDD/2
Table 20-1.
Right Adjust
01FFh
FF00h
FE01h
0100h
0
INPUT
INPUT
POS.
NEG.
MUX
MUX
ADC INPUT SELECT
REGISTER (DADI)
CHANNEL SELECTION
Example ADC Conversion Codes
Left Adjust
7FC0h
C000h
4000h
8040h
0
SAMPLE &
+
-
HOLD
TRIGGER
SELECT
Overflows
DA+
Timer
DA-
Single-Ended Mode (V
AV
AV
AV
AV
DD
DD
/2 + 511/512 x V
/2 – 511/512 x V
DD
DD
/2 + 1/2 x V
/2 – 1/2 x V
ADC CTRL & STATUS
AV
REGISTER (DADC)
DD
INTERRUPT
10-BIT SAR
/2
FLAG
REF
REF
PRESCALER
REF
REF
IN
)
Differential Mode (V
15
ADC DATA REGISTER
–511/512 x V
511/512 x V
(DADH/DADL)
–1/2 x V
1/2 x V
0
REF
3706A–MICRO–9/09
REF
REF
REF
IN
+ – V
0
IN
-)
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