Samsung S3C9228 User Manual page 233

S3P9228 OTP
Main Chip
Pin Name Pin Name
P1.2
P1.3
TEST
nRESET nRESET
V
DD
V
SS
NOTE: Parentheses indicate pin number for 42-SDIP and 48-ELP package.
Characteristic
Program Memory
Operating Voltage (V
OTP Programming Mode
Pin Configuration
EPROM Programmability
18-4
Table 18-1. Descriptions of Pins Used to Read/Write the EPROM
Pin No.
SDAT 3 (9/3)
SCLK 4 (10/4)
V
9 (15/9)
PP
12 (18/13)
V
5 (11/5)
DD
6 (12/6)
V
SS
Table 18-2. Comparison of S3P9228 and S3C9228 Features
8K-byte EPROM
)
2.0 V to 5.5 V
DD
V = 5 V, V
DD
44-QFP, 42-SDIP
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/O 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.
S3P9228
(TEST)=12.5V
PP
S3C9228/P9228_UM_REV1.10
Function
should be tied to
DD
S3C9228
8K-byte mask ROM
2.0 V to 5.5 V
–
44-QFP, 42-SDIP
Programmed at the factory