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S3C8248/C8245/P8245/C8247/C8249/P8249
Main Chip
Pin Name
Pin Name
P3.3
SDAT
P3.4
SCLK
V
TEST
PP
RESET
RESET
V
/V
V
/V
DD
SS
DD
SS
Table 21-2. Comparison of S3P8245/P8249 and S3C8248/C8245/C8247/C8249 Features
Characteristic
Program Memory
Operating Voltage (V
DD
OTP Programming Mode
Pin Configuration
EPROM Programmability
Table 21-1. Descriptions of Pins Used to Read/Write the EPROM
Pin No.
10
11
16
19
12/13
S3P8245/P8249
16K/32K-byte EPROM
)
1.8 V to 5.5 V
V
= 5 V, V
DD
PP
80-QFP/80-TQFP
User Program 1 time
During Programming
I/O
I/O
Serial data pin. Output port when reading and
input port when writing. Can be assigned as a
Input/push-pull output port.
I
Serial clock pin. Input only pin.
I
Power supply pin for EPROM cell writing
(indicates that OTP enters into the writing mode).
When 12.5 V is applied, OTP is in writing mode
and when 5 V is applied, OTP is in reading
mode. (Option)
I
Chip Initialization
–
Logic power supply pin. V
+5 V during programming.
(TEST) = 12.5 V
S3P8245/P8249 OTP
Function
should be tied to
DD
S3C8248/C8245/C8247/C8249
16K/32K-byte mask ROM
1.8 V to 5.5 V
80-QFP/80-TQFP
Programmed at the factory
21-3
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