AT89LP6440-20AU Atmel, AT89LP6440-20AU Datasheet - Page 152

• Manufacturer Part Number: AT89LP6440-20AU
• Description: MCU 8051 64K FLASH ISP 44TQFP
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP6440-20AU

• 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: 44-TQFP, 44-VQFP
• Package: 44TQFP
• Device Core: 8051
• Family Name: 89LP
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 2.5|3.3 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 38
• Interface Type: 2-Wire/SPI
• On-chip Dac: 8-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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