AT89C51AC3 Atmel Corporation, AT89C51AC3 Datasheet - Page 131

• Manufacturer Part Number: AT89C51AC3
• Manufacturer: Atmel Corporation

Specifications of AT89C51AC3

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 2.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

External Clock Drive
Waveforms
AC Testing Input/Output
Waveforms
Float Waveforms
4383D–8051–02/08
AC inputs during testing are driven at V
Timing measurement are made at V
For timing purposes as port pin is no longer floating when a 100 mV change from load
voltage occurs and begins to float when a 100 mV change from the loaded V
occurs. I
INPUT/OUTPUT
OL
0.45V
V
/I
CC
OH
-0.5V
≥ ± 20 mA.
0.2V
0.7V
V
CC
CC
CC
0.45V
-0.1
T
-0.5V
V
V
CHCL
OH
OL
+ 0.1 V
- 0.1 V
IH
min for a logic “1” and V
CC
FLOAT
V
LOAD
- 0.5 for a logic “1” and 0.45V for a logic “0”.
T
CLCX
0.2 V
0.2 V
CC
CC
T
+ 0.9
- 0.1
CLCL
V
V
IL
LOAD
LOAD
T
max for a logic “0”.
CLCH
+ 0.1 V
- 0.1 V
T
CHCX
OH
/V
OL
level
131