AT89LP6440-20PU Atmel, AT89LP6440-20PU Datasheet - Page 152
![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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22.1.11
22.1.12
152
Description: The MOVX instruction transfesr data from external data memory to the Accumulator. The unselected Data
Description: The MOVX instruction transfesr data from the Accumulator to external data memory. The unselected Data
Operation: MOVX
Operation: MOVX
Encoding:
Encoding:
AT89LP6440 - Preliminary
Function: Move External using Alternate Data Pointer
Function: Move External using Alternate Data Pointer
MOVX A, @/DPTR
MOVX @/DPTR, A
Example: DPS = 0, DPTR0 contains 0123H and DPTR1 contains 4567H. The following instruction sequence,
Example: DPS = 0, DPTR0 contains 0123H and DPTR1 contains 4567H. The following instruction sequence,
Cycles: 3 (EDATA)
Cycles: 3 (EDATA)
Bytes: 2
Bytes: 2
Pointer generates a 16-bit address which targets EDATA, FDATA or XDATA.
MOVX
MOVX
copies the data from address 0123H to 4567H.
5 (FDATA or XDATA)
IF (DPS) = 0
ELSE
Pointer generates a 16-bit address which targets EDATA, FDATA or XDATA.
MOVX
MOVX
copies the data from address 0123H to 4567H.
5 (FDATA or XDATA)
IF (DPS) = 0
THEN
ELSE
A5
A5
(A) ← ((DPTR1))
(A) ← ((DPTR0))
((DPTR1)) ← (A)
((DPTR0)) ← (A)
A, @DPTR
@/DPTR, A
A, @DPTR
@/DPTR, A
1
1
1
1
1
1
0
1
0
0
0
0
0
0
0
0
3706A–MICRO–9/09
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