1568pp1.hpl

schematic interface orange for eeprom programming

; Orange programmer module v2.0
; (c) 1999 Alex Plusov
; I2C chips with invert wp
; CHIP=1568PP1 256x8
; CHIP=BAW574252 128x8

SOCKET=1 ;"I2C"

PINO=SCL,0
PINO=SDA,1
PINO=WP, 2
PINO=A0, 3
PINO=A1, 4
PINO=A2, 5
PINI=SDA,1

CDELAY = 4 ; one set delay

[INIT]
A0=0,A1=0,A2=0
WP=1
R0=0xA0   ; write I2C address const
R1=0xA1   ; read I2C address const

[READ]
SDA=1,SCL=1,SDA=0,SCL=0 ;start

LOOP=(7,0) {SDA=R0[I],SCL=1,SCL=0}  ; out 8 bits 0xA0
SDA=0,SDA=1,SCL=1,SDA?0             ; ack check
SCL=0,SDA=0

LOOP=(7,0) {SDA=ADR[I],SCL=1,SCL=0}    ; out 8 bits
SDA=0,SDA=1,SCL=1,SDA?0              ; ack check
SCL=0,SDA=0

SDA=1,SCL=1,SDA=0,SCL=0 ;start
LOOP=(7,0){SDA=R1[I],SCL=1,SCL=0}    ; out 8 bits 0xA1
SDA=0,SDA=1,SCL=1,SDA?0              ; ack check
SCL=0

SDA=1
LOOP=(7,0){SCL=1,DATA[I]=SDA,SCL=0} ;read byte
SDA=1,SCL=1,SCL=0,SDA=0              ;master not asked

SCL=0,SCL=1,SDA=1                   ;stop


[WRITE]
P=10
SDA=1,SCL=1,SDA=0,SCL=0 ;start
LOOP=(7,0) {SDA=R0[I],SCL=1,SCL=0} ; out 8 bits 0xA0
SDA=0,SDA=1,SCL=1,SDA?0             ; ack check
SCL=0,SDA=0

LOOP=(7,0){SDA=ADR[I],SCL=1,SCL=0}   ; out 8 bits address
SDA=0,SDA=1,SCL=1,SDA?0             ; ack check
SCL=0,SDA=0

LOOP=(7,0){SDA=DATA[I],SCL=1,SCL=0}  ; out 8 bits data
SDA=0,SDA=1,SCL=1,SDA?0             ; 0 - ack check?
SCL=0,SDA=0
SCL=0,SCL=1,SDA=1                  ;stop
P=25000