AT80C51RD2-SLSIM Atmel, AT80C51RD2-SLSIM Datasheet - Page 70

• Manufacturer Part Number: AT80C51RD2-SLSIM
• Description: IC MCU 8051 5V SPI 20MHZ 44-PLCC
• Manufacturer: Atmel
• Series: 80Cr

Specifications of AT80C51RD2-SLSIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

17.3.5
4113D–8051–01/09
External Data Memory Write Cycle
PORT 0
PORT 2
PSEN
ALE
WR
OR SFR-P2
ADDRESS
A0-A7
T
T
LLAX
AVWL
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
LLWL
WLWH
QVWX
QVWH
WHQX
RHDX
AVWL
WHLH
WHLH
RLRH
RLDV
RHDZ
AVDV
LLDV
LLWL
LLWL
RLAZ
ADDRESS A8 - A15 OR SFR P2
Type
Max
Max
Max
Max
Max
Max
Max
Min
Min
Min
Min
Min
Min
Min
Min
Min
T
QVWX
Standard
3 T + x
6 T - x
6 T - x
5 T - x
2 T - x
8 T - x
9 T - x
3 T - x
4 T - x
7 T - x
Clock
T + x
T - x
T - x
T - x
x
x
T
QVWH
T
DATA OUT
WLWH
X2 Clock
1.5 T + x
0.5 T + x
2.5 T - x
4.5 T - x
1.5 T - x
0.5 T - x
3.5 T - x
0.5 T - x
0.5 T - x
3 T - x
3 T - x
2 T - x
4T -x
T - x
x
x
T
WHLH
X parameter for -
M range
AT80C51RD2
25
25
30
25
45
65
30
30
30
20
20
15
20
20
0
0
T
WHQX
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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