24C32

GIYF

when I need some code I write it, why don't you do the same?

Erik

i am trying but no response
i am using 89c52 and the given code.

; Pin Definations
eeprom_scl_pin reg p2.1
eeprom_sda_pin reg p2.2
; Main Program starts from here
mov memory_address1,#00h
mov memory_address2,#00h
mov eeprom_data,#05
call write_data
mov memory_address1,#00h
mov memory_address2,#00h
call read_data
mov 5dh,3ch
loop:
jmp loop
; Sub routines starts from here
write_data call eeprom_start
mov a,#a0h
call send_data
mov a,memory_address1 ;locati ddress
call send_data
mov a,memory_address2 ;locion address
call send_data
mov a,eeprom_data ;data to be send
call send_data
call eeprom_stop
ret
;======
read_data:
call eeprom_start
mov a,#a0h
call send_data
mov a,memory_address1 ;location address
call send_data
mov a,memory_address2 ;location address
call send_data
call eeprom_start
mov a,#a1h
call send_data
call get_data
call eeprom_stop
ret
;================================
eeprom_start:
setb eeprom_sda_pin
nop
setb eeprom_scl_pin
nop
nop
clr eeprom_sda_pin
nop
clr eeprom_scl_pin
ret
;==================================
eeprom_stop clr eeprom_sda_pin
nop
setb eeprom_scl_pin
nop
nop
setb eeprom_sda_pin
nop
clr eeprom_scl_pin
ret
;======================================
send_data mov r7,#00h
send rlc a
mov eeprom_sda_pin,c
call clock
inc r7
cjne r7,#08,send
setb eeprom_sda_pin
jb eeprom_sda_pin,$
; call eeprom_delay
call clock
ret
;=========================================
get_data
mov r7,#00h
setb eeprom_sda_pin
get mov c,eeprom_sda_pin
call clock
rlc a
inc r7
cjne r7,#08,get
setb eeprom_sda_pin
call clock
mov 3ch,a
ret
;==========================================
clock setb eeprom_scl_pin
nop
nop
clr eeprom_scl_pin
ret
;===========================================
eeprom_delay mov 33h,#11 ;delay of 3 msec
eeprom_delay_1 mov 32h,#ffh
djnz 32h,$
djnz 33h,eeprom_delay_1
ret
;============================================
; Program END