AT89C51AC3-SLSIM Atmel, AT89C51AC3-SLSIM Datasheet - Page 25

IC 8051 MCU FLASH 64K 44PLCC

AT89C51AC3-SLSIM

Manufacturer Part Number
AT89C51AC3-SLSIM
Description
IC 8051 MCU FLASH 64K 44PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet

Specifications of AT89C51AC3-SLSIM

Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
36
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
2.25K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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Manufacturer
Quantity
Price
Part Number:
AT89C51AC3-SLSIM
Manufacturer:
Atmel
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10 000
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AT89C51AC3-SLSIM
Manufacturer:
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Registers
4383D–8051–02/08
Table 6. PSW Register
PSW (S:8Eh)
Program Status Word Register
Reset Value = 0000 0000b
Table 7. AUXR Register
AUXR (S:8Eh)
Auxiliary Register
Number
Number
CY
Bit
Bit
4-3
7-6
7
7
-
7
6
5
2
1
0
5
Mnemonic Description
Mnemonic Description
RS1:0
AC
Bit
Bit
CY
AC
OV
M0
F0
F1
6
6
P
-
-
Carry Flag
Carry out from bit 1 of ALU operands.
Auxiliary Carry Flag
Carry out from bit 1 of addition operands.
User Definable Flag 0.
Register Bank Select Bits
Refer to Table 4 for bits description.
Overflow Flag
Overflow set by arithmetic operations.
User Definable Flag 1
Parity Bit
Set when ACC contains an odd number of 1’s.
Cleared when ACC contains an even number of 1’s.
Reserved
The value read from these bits are indeterminate. Do not set this bit.
Stretch MOVX control:
the RD/ and the WR/ pulse length is increased according to the value of M0.
M0
0
1
M0
F0
5
5
Pulse length in clock period
6
30
XRS2
RS1
4
4
XRS1
RS0
3
3
XRS0
OV
2
2
EXTRAM
F1
1
1
A0
P
0
0
25

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