AT89C51RC2 Atmel Corporation, AT89C51RC2 Datasheet - Page 112

• Manufacturer Part Number: AT89C51RC2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RC2

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

112
AT89C51RB2/RC2
Table 76. AC Parameters for a Fix Clock
Table 77. AC Parameters for a Variable Clock
Symbol
Symbol
T
T
T
T
T
T
T
T
T
T
T
PLPH
T
T
T
AVLL
LLAX
PLAZ
T
T
T
T
LHLL
LLPL
PXIX
PXIZ
AVIV
T
T
T
T
LLIV
PLIV
T
PLPH
LHLL
AVLL
LLAX
LLPL
PLAZ
PLIV
PXIX
PXIZ
AVIV
LLIV
Type
Max
Max
Max
Max
Max
Min
Min
Min
Min
Min
Min
Standard
Clock
Min
2 T - x
4 T - x
3 T - x
3 T - x
5 T - x
T - x
T - x
T - x
T - x
25
35
50
5
5
5
0
x
x
-M
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
x
x
Max
n 65
X Parameter for -
30
10
80
10
M Range
15
20
20
35
15
25
45
15
45
10
0
Min
25
35
50
5
5
5
0
X Parameter for
-L
-L Range
Max
65
30
10
80
10
15
20
20
35
15
25
45
15
45
10
0
4180E–8051–10/06
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns