AT80C51RD2 Atmel Corporation, AT80C51RD2 Datasheet - Page 68

• Manufacturer Part Number: AT80C51RD2
• Manufacturer: Atmel Corporation

Specifications of AT80C51RD2

• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Sram (kbytes): 1.25
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Watchdog: Yes

17.3.3
17.3.4
4113D–8051–01/09
External Program Memory Read Cycle
External Data Memory Characteristics
PORT 0
PORT 2
PSEN
ALE
INSTR IN
OR SFR-P2
ADDRESS
Table 17-4.
T
LHLL
T
T
LLAX
AC Parameters for a Variable Clock
AVLL
A0-A7
T
AVIV
ADDRESS A8 - A15
T
LLIV
T
Symbol
LLPL
TPLAZ
T
T
T
T
T
T
T
T
T
T
T
T
PLIV
PLPH
LHLL
AVLL
LLAX
LLPL
AVIV
PLAZ
PLIV
PXIX
PXIZ
LLIV
T
PLPH
INSTR IN
T
PXIX
Type
Max
Max
Max
Max
Max
Min
Min
Min
Min
Min
Min
12 T
CLCL
Standard
2 T - x
4 T - x
3 T - x
3 T - x
5 T - x
T
Clock
T - x
T - x
T - x
T - x
PXIZ
x
x
T
PXAV
A0-A7
X2 Clock
0.5 T - x
0.5 T - x
0.5 T - x
1.5 T - x
1.5 T - x
0.5 T - x
2.5 T - x
2 T - x
T - x
ADDRESS A8-A15
x
x
AT80C51RD2
X Parameter for -
INSTR IN
M Range
15
20
20
35
15
25
45
15
45
10
0
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
65