WS57C45 Datasheet, PDF (7/9 Pages) STMicroelectronics – HIGH-SPEED 2K x 8 REGISTERED CMOS PROM/RPROM

FIGURE 5. PROM PROGRAMMING WAVEFORMS
V_IH
ADDRESS _VIL
V_IH
DATA
V_IL
V_PP
INIT/V_PP
V_IH
V_IL
V_IH
CP/PGM _VIL
V_IH
(OE /OE_S) / VFY _VIL
PROGRAM
ADDRESS STABLE
t _AS
t _DS
DATA IN
t _AS
t _DH
t _PW
t_R
VERIFY
PROGRAM
OTHER BYTES
t _DV
DATA OUT
t _DZ
t_F
t _AH
t _DV
t _VP
FIGURE 6. INITIAL BYTE PROGRAMMING WAVEFORMS
V_IH
V_IL ^A2
V_PP
V_IH A₁
V_IL
V_IH
DATA
V_IL
V_PP
INIT/V_PP
V_IH
V_IL
V_IH
CP/PGM
V_IL
PROGRAM
t_DS
t_DH
t_R
DATA IN
t_AS
t_AH
t_PW
t_R
t_F
t_F
FIGURE 7. PROGRAM SYNCHRONOUS ENABLE
V_IH
A₂
V_IL
t _AS
t _PW
V_IH
CP/PGM
V_IL
(OE /OE_S) / VFY ^VIH
V_IL
t_R
V_PP
V_IH ^A1
V_IL
V_PP
INIT/V_PP
V_IH
V_IL
t_AS
t_R
t _AH
t _AH
t_F
t_F
WS57C45
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