upd178p018 Renesas Electronics Corporation., upd178p018 Datasheet - Page 44

• Manufacturer Part Number: upd178p018
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

44
PROM Write Mode Timing (byte program mode)
Cautions 1.
PROM Read Mode Timing
Notes 1. If you want to read within the range of t
PGM
CE
OE
V
V
OE
A0 to A16
CE
D0 to D7
DD
PP
A0 to A16
2. t
2.
3.
V
D0 to D7
DD
of t
DF
V
V
+ 1.5
V
V
V
V
Reliability may be adversely affected if removal/reinsertion is performed while +12.5 V is being
applied to V
IH
IH
V
V
V
IL
IL
DD
PP
V
V
V
V
V
V
ACC
is the time from when either OE or CE first reaches V
DD
DD
PP
IH
IH
IH
IL
IL
IL
should be applied before V
must not exceed +13.5 V including overshoot.
– t
Hi-Z
OE
.
PP
t
t
t
.
t
t
t
VPS
VDS
CES
ACC
AS
DS
Hi-Z
Note1
Data Input
t
PW
Program
t
t
CE
OE
Effective Address
Note 1
PP
t
, and removed after V
DH
ACC
, make the OE input delay time from the fall of CE a maximum
t
OES
Data Output
Hi-Z
t
OE
t
OH
IH
PP
Program Verify
.
Data Output
.
t
DF
Note 2
t
DF
t
AH
Hi-Z
t
OEH
PD178P018A
Hi-Z