AT89C51AC2 Atmel Corporation, AT89C51AC2 Datasheet - Page 4

• Manufacturer Part Number: AT89C51AC2
• Manufacturer: Atmel Corporation

Specifications of AT89C51AC2

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 40 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 1.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

4
C Init EEPROM program example:
Assembler Init EEPROM program example:
#define SIZE_EEPROM 12
unsigned char code
tab_eep[SIZE_EEPROM]={0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA};
void main (void)
{
}
SIZE_EEPROM EQU 00Ah
CSEG AT 0000H
address =0x00;
for (cpt=0; cpt<SIZE_EEPROM; cpt++)
unsigned char xdata * address;
unsigned char cpt;
{
}
*(address + cpt) = tab_eep[cpt];
EECON = 0x50;
EECON = 0xA0;
while (EECON&0x01);
EECON = 0x02; // enable eeprom access
EEPROM program in
Start the bootloader
EEPROM program
Download a Final
program in flash
Download a Init
flash memory
Start this init
Re-Start the
bootloader
memory
- With hardware condition
- With "start application"
command
- With "start application"
command
- With hardware condition
4159G–8051–05/06