AT89S4051 Atmel Corporation, AT89S4051 Datasheet - Page 39

• Manufacturer Part Number: AT89S4051
• Manufacturer: Atmel Corporation

Specifications of AT89S4051

• Flash (kbytes): 4 Kbytes
• Max. Operating Frequency: 24 MHz
• Cpu: 8051-12C
• Max I/o Pins: 15
• Uart: 1
• Sram (kbytes): 0.25
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 2
• Isp: SPI

48. I
49. I
50. Clock Signal Waveform for I
51. I
3390E–MICRO–6/08
t
V
CC
CC
CC
CLCH
CC
Test Condition, Active Mode, All Other Pins are Disconnected
Test Condition, Idle Mode, All Other Pins are Disconnected
Test Condition, Power-down Mode, All Other Pins are Disconnected,
= 2V to 5.5V
= t
CHCL
= 5 ns
0.45V
V
CC
- 0.5V
0.2 V
CLOCK SIGNAL
CLOCK SIGNAL
0.7 V
CC
t
(NC)
CHCL
- 0.1V
CC
CC
(NC)
(NC)
Tests in Active and Idle Modes,
RST
XTAL2
XTAL1
VSS
RST
XTAL2
XTAL1
V
RST
XTAL2
XTAL1
V
SS
SS
t
CHCX
P1, P3
V
P1, P3
CC
P1, P3
V
V
CC
CC
I
CC
t
V
V
CLCL
CC
CC
I
CC
I
V
V
CC
t
CC
V
CC
V
CLCH
CC
t
CC
CHCX
AT89S2051/S4051
39