AT89LP6440-20AU Atmel, AT89LP6440-20AU Datasheet - Page 150

• 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

22.1.7
22.1.8
150
Description: The forty bits in the M register are shifted one bit to the left. Bit 0 is cleared. No flags are affected.
Description: The MOVC instructions load the Accumulator with a code byte or constant from program memory. The address
Operation: LSL
Operation: MOVC
Encoding:
Encoding:
AT89LP6440 - Preliminary
Function: Shift MAC Accumulator Left Logically
Function: Move code byte relative to Alternate Data Pointer
LSL M
MOVC A, @A+/DPTR
Example: The M register holds the value 0C5B1A29384H. The following instruction,
Example: A value between 0 and 3 is in the Accumulator. The following instructions will translate the value in the
Cycles: 2
Cycles: 4
Bytes: 2
Bytes: 2
LSL M
leaves the M register holding the value 8B63452708H.
(M
(M
of the byte fetched is the sum of the original unsigned 8-bit Accumulator contents and the contents of the
unselected Data Pointer. The base register is not altered. Sixteen-bit addition is performed so a carry-out from
the low-order eight bits may propagate through higher-order bits. No flags are affected.
Accumulator to one of four values defined by the DB (define byte) directive.
TABLE:
If the subroutine is called with the Accumulator equal to 01H, it returns with 77H in the Accumulator.
IF (DPS) = 0
THEN
ELSE
n+1
0
) ← 0
A5
A5
MOV
MOVC
RET
(A) ← ( (A) + (DPTR1) )
(A) ← ( (A) + (DPTR0) )
) ← (M
DB
DB
DB
DB
n
) n = 0 - 38
66H
/DPTR, #TABLE
A, @A+PC
77H
88H
99H
0
1
0
0
1
0
0
1
0
0
0
0
1
1
1
1
3706A–MICRO–9/09