s2444.hpl

schematic interface orange for eeprom programming

; Orange programmer module v1.1
; (c) 1999 Alex Plusov
; CHIP=S2444 (16x16) Xicor/Seiko
; Software RECALL,STORE

SOCKET=2

PINO=SK,0
PINO=DI,1
PINO=CE,2
PINO=RECALL,3
PINO=STORE,4
PINI=DO,1

CDELAY=4 ; one set delay

[READ]
STORE=1
RECALL=1
CE=0
SK=0
CE=1
DI=1,SK=1,SK=0    ;
LOOP=ADR(3,0){DI=I,SK=1,SK=0}    ; out adr
DI=1,SK=1,SK=0    ; \ read instruction
DI=1,SK=1,SK=0    ; /
DI=1,SK=1,SK=0    ;  x
DI=1
LOOP=DATA(0,15){I=DO,SK=1,SK=0}  ; read data word
CE=0

[WRITEINIT]
RECALL=1
STORE=1
CE=0
SK=0

[WRITE]
CE=1
CONST=10000100b
LOOP=CONST(7,0){DI=I,SK=1,SK=0}    ; out WREN
CE=0
DI=0,SK=1,SK=0

CE=1
DI=1,SK=1,SK=0
LOOP=ADR(3,0){DI=I,SK=1,SK=0}    ; out adr
DI=0,SK=1,SK=0    ; \ write instruction
DI=1,SK=1,SK=0    ; /
DI=1,SK=1,SK=0    ;  x
LOOP=DATA(0,15){DI=I,SK=0,SK=1,SK=0}  ; write data word
CE=0

CE=1
CONST=10000001b
LOOP=CONST(7,0){DI=I,SK=1,SK=0}    ; out soft STO
CE=0
DI=0,SK=1,SK=0
P=10000

CE=1
CONST=10000101b
LOOP=CONST(7,0){DI=I,SK=1,SK=0}    ; out soft RECALL
CE=0
DI=0,SK=1,SK=0
P=3000