AT89C51RD2-SLRUM Atmel, AT89C51RD2-SLRUM Datasheet - Page 121

• Manufacturer Part Number: AT89C51RD2-SLRUM
• Description: IC MCU FLASH 8051 EEP 64K 44PLCC
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51RD2-SLRUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• For Use With: AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCUAT89STK-11 - KIT STARTER FOR AT89C51RX2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Compliant
• Other names: AT89C51RD2-SLRUMTR

25.3.5
4235K–8051–05/08
External Data Memory Write Cycle
PORT 0
PORT 2
PSEN
ALE
WR
OR SFR-P2
ADDRESS
Table 25-6.
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WLWH
QVWX
QVWH
WHQX
RHDX
RHDZ
AVWL
WHLH
WHLH
RLRH
RLDV
AVDV
LLWL
LLWL
RLAZ
LLDV
AC Parameters for a Variable Clock
A0-A7
T
Type
T
Max
Max
Max
Max
Max
Max
Max
LLAX
Min
Min
Min
Min
Min
Min
Min
Min
Min
AVWL
T
LLWL
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
ADDRESS A8-A15 OR SFR P2
x
x
T
QVWX
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
T
QVWH
x
x
T
DATA OUT
WLWH
AT89C51RD2/ED2
X parameter for
T
-M range
WHLH
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
121