AT89C51AC3 Atmel Corporation, AT89C51AC3 Datasheet - Page 129

• 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 Data Memory Write Cycle
External Data Memory Read Cycle
Serial Port Timing – Shift Register Mode
4383D–8051–02/08
PORT 0
PORT 2
PORT 0
PORT 2
PSEN
ALE
ALE
PSEN
WR
RD
OR SFR-P2
OR SFR-P2
ADDRESS
ADDRESS
Table 79. Symbol Description (F = 40 MHz)
Symbol
T
T
T
T
T
XLXL
QVHX
XHQX
XHDX
XHDV
A0-A7
A0-A7
T
T
LLAX
T
T
LLAX
AVWL
AVWL
T
T
LLWL
LLWL
T
AVDV
T
LLDV
ADDRESS A8-A15 OR SFR P2
ADDRESS A8-A15 OR SFR P2
T
T
QVWX
RLAZ
T
QVWH
T
DATA OUT
T
WLWH
RLRH
Parameter
Serial port clock cycle time
Output data set-up 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
DATA IN
T
T
T
WHLH
WHLH
RHDX
T
T
RHDZ
WHQX
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