AT89C5115 Atmel Corporation, AT89C5115 Datasheet - Page 3

• 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

ISP Communication
Management
User Call Management Several Application Program Interface (API) calls are available to the application program to
Flash Memory
Management
Bootloader Configuration
Configuration and
Manufacturer
Information
4225C–8051–03/08
The purpose of this process is to manage the communication and its protocol between the on-
chip bootloader and an external device (host). The on-chip bootloader implements a Serial pro-
tocol (see Section “Protocol”, page 9). This process translates serial communication frames
(UART) into Flash memory accesses (read, write, erase...).
selectively erase and program Flash pages. All calls are made through a common interface (API
calls) included in the bootloader. The purpose of this process is to translate the application
request into internal Flash Memory operations.
This process manages low level accesses to the Flash memory (performs read and write
accesses).
The following table lists Configuration and Manufacturer byte information used by the boot-
loader. This information can be accessed through a set of API or ISP commands.
Mnemonic
BSB
SBV
P1_CF
P3_CF
P4_CF
SSB
EB
Manufacturer
ID1: Family code
ID2: Product Name
ID3: Product Revision
Description
Boot Status Byte
Software Boot Vector
Port 1 Configuration
Port 3 Configuration
Port 4 Configuration
Software Security Byte
Extra Byte
T89C5115 UART Bootloader
Default Value
FCh
FEh
D7h
BBh
FFh
FFh
FFh
FFh
FFh
58h
FFh
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