AT89C5115 Atmel Corporation, AT89C5115 Datasheet - Page 10

• 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

Command Data
Stream Protocol
Figure 5. Command Flow
10
Sends frame (made of 2 ASCII
characters per Byte)
Echo analysis
T89C5115 UART Bootloader
Sends first character of the
Frame
Host
All commands are sent using the same flow. Each frame sent by the host is echoed by the
bootloader.
":"
":"
Gets frame, and sends back echo
for each received Byte
Else
If (not received ":")
Sends echo and start
reception
Bootloader
4225C–8051–03/08