S3C9442 View Datasheet(PDF) - Samsung
Part Name
Description
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S3C9442 Datasheet PDF : 26 Pages
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S3C9442/C9444/F9444/C9452/C9454/F9454
S3F9444/F9454 MTP
Main Chip
Pin Name
P0.1
P0.0
RESET, P1.2
VDD/VSS
Table 15-1. Descriptions of Pins Used to Read/Write the Flash ROM
Pin Name
SDA
SCL
VPP
VDD/VSS
During Programming
Pin No.
I/O
Function
18 (20-pin)
14 (16-pin)
I/O Serial data pin (output when reading, Input
when writing) Input and push-pull output port
can be assigned
19 (20-pin)
15 (16-pin)
I Serial clock pin (input only pin)
4
I Power supply pin for flash ROM cell writing
(indicates that MTP enters into the writing
mode). When 12.5 V is applied, MTP is in
writing mode and when 5 V is applied,
MTP is in reading mode. (Option)
20 (20-pin), 16 (16-pin)
1 (20-pin), 1 (16-pin)
I Logic power supply pin.
Table 15-2. Comparison of S3F9444/F9454 and S3C9442/C9444/C9452/C9454 Features
Characteristic
Program Memory
Operating Voltage (VDD)
OTP Programming Mode
Pin Configuration
EPROM Programmability
S3F9444/F9454
S3C9442/C9444/C9452/C9454
4 Kbyte Flash ROM
2K/4K byte mask ROM
2.0 V to 5.5 V
2.0 V to 5.5 V
VDD = 5 V, VPP = 12.5 V
20 DIP/20 SOP/16 DIP/8 DIP/8 SOP
User Program multi time
Programmed at the factory
OPERATING MODE CHARACTERISTICS
When 12.5 V is supplied to the VPP pin of the S3F9444/F9454 Flash ROM 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 15-3 below.
Table 15-3. Operating Mode Selection Criteria
VDD
VPP
REG/MEM
Address
(A15–A0)
R/W
5V
5V
0
0000H
1
12.5 V
0
0000H
0
12.5 V
0
0000H
1
12.5 V
1
0E3FH
0
Mode
Flash ROM read
Flash ROM program
Flash ROM verify
Flash ROM read protection
NOTE: "0" means Low level; "1" means High level.
15-3
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