AT89C5115 Atmel Corporation, AT89C5115 Datasheet - Page 16

• Manufacturer Part Number: AT89C5115
• Manufacturer: Atmel Corporation

Specifications of AT89C5115

• Flash (kbytes): 16 Kbytes
• Max. Operating Frequency: 40 MHz
• Cpu: 8051-12C
• Max I/o Pins: 20
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 0.5
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

Figure 4. Mode Switching Waveforms
Note:
16
1. In order to prevent any incorrect operation while operating in the X2 Mode, users must be aware that all peripherals using
AT89C5115
the clock frequency as a time reference (UART, timers...) will have their time reference divided by 2. For example, a free run-
ning timer generating an interrupt every 20 ms will then generate an interrupt every 10 ms. A UART with a 4800 baud rate
will have a 9600 baud rate.
XTAL1
XTAL2
X2 bit
CPU
clock
STD
Mode
(1)
X2
Mode
STD
Mode
4128G–8051–02/08