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S3P8245/P8249 OTP S3C8245/P8245/C8249/P8249
21-4
OPERATING MODE CHARACTERISTICS
When 12.5 V is supplied to the V
PP
(TEST) pin of the S3P8245/P8249, the EPROM programming mode is entered.
The operating mode (read, write, or read protection) is selected according to the input signals to the pins listed in
Table 21-3 below.
Table 21-3. Operating Mode Selection Criteria
V
DD
V
PP
(TEST) REG/nMEM Address(A15–A0) R/W Mode
5 V 5 V 0 0000H 1 EPROM read
12.5 V 0 0000H 0 EPROM program
12.5 V 0 0000H 1 EPROM verify
12.5 V 1 0E3FH 0 EPROM read protection
NOTE: "0" means Low level; "1" means High level.
Table 21-4. D.C Electrical Characteristics
(T
A
= -25
°
C to +85
°
C, V
DD
= 1.8 V to 5.5 V)
Parameter Symbol Conditions Min Typ Max Unit
Operating voltage V
DD
f
CPU
= 10 MHz 2.7 – 5.5 V
All input pins except V
IH2, 3
1.8 – 5.5
Input high V
IH1
Port 4,5 V
LCD2
≥ V
DD
0.8 V
DD
– V
DD
voltage V
IH2
X
IN
, XT
IN
0.8 V
DD
– V
DD
V
IH3
All input pins except V
IL2
V
DD
- 0.1 – V
DD
Input low voltage V
IL1
X
IN
, XT
IN
– – 0.2 V
DD
V
IL2
V
DD
= 5 V; I
OH
= -1 mA
All output pins
0.1
Output high voltage V
OH
V
DD
= 5 V; I
OL
= 2 mA
All output pins
V
DD
-1.0 – –
Output low voltage V
OL
– – 0.4