AT89C2051 Atmel Corporation, AT89C2051 Datasheet - Page 13

• Manufacturer Part Number: AT89C2051
• Manufacturer: Atmel Corporation

Specifications of AT89C2051

• Flash (kbytes): 2 Kbytes
• Max. Operating Frequency: 24 MHz
• Cpu: 8051-12C
• Max I/o Pins: 15
• Uart: 1
• Sram (kbytes): 0.125
• Operating Voltage (vcc): 2.7 to 6.0
• Timers: 2

18. External Clock Drive Waveforms
19. External Clock Drive
20. Serial Port Timing: Shift Register Mode Test Conditions
V
0368H–MICRO–6/08
Symbol
1/t
t
t
t
t
t
Symbol
t
t
t
t
t
CC
CLCL
CHCX
CLCX
CLCH
CHCL
XLXL
QVXH
XHQX
XHDX
XHDV
CLCL
= 5.0V ± 20%; Load Capacitance = 80 pF
Parameter
Serial Port Clock Cycle Time
Output Data Setup to Clock Rising Edge
Output Data Hold after Clock Rising Edge
Input Data Hold after Clock Rising Edge
Clock Rising Edge to Input Data Valid
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
()
83.3
Min
30
30
0
V
CC
= 2.7V to 6.0V
Min
700
1.0
50
0
12 MHz Osc
Max
12
20
20
Max
700
10 t
2 t
41.6
Min
15
15
12 t
0
V
CLCL
CLCL
Min
CC
Variable Oscillator
0
CLCL
-117
= 4.0V to 6.0V
-133
10 t
AT89C2051
Max
CLCL
24
20
20
Max
-133
Units
Units
MHz
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
13