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KS88C4504 Datasheet(PDF) 34 Page - Samsung semiconductor

No. de Pieza. KS88C4504
Descripción  new SAM87RC family of 8-bit single-chip CMOS microcontrollers offers a fast and efficient CPU, a wide range of integrated peripherals, and various mas
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Fabricante  SAMSUNG [Samsung semiconductor]
Página de inicio  http://www.samsung.com/Products/Semiconductor
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KS88C4504 Datasheet(HTML) 34 Page - Samsung semiconductor

 
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KS88P4504 OTP
KS88C4504/P4504
20-4
Table 20-1. Descriptions of Pins Used to Read/Write the EPROM
Main Chip
During Programming
Pin Name
Pin Name
Pin No.
I/O
Function
P4.5
SDAT
10
I/O
Serial Data Pin (Output when reading, Input
when writing) Input and Push-pull Output Port
can be assigned.
P4.4
SCLK
11
I
Serial Clock Pin (Input Only Pin)
EA
VPP
16
I
EPROM Cell Writing Power Supply Pin
(Indicates OTP Mode Entering) When writing
12.5V is applied and when reading 5 V is applied
(Option).
RESET
RESET
19
I
Chip Initialization
VDD1/VSS1
VDD/VSS
12/13
I
Logic Power Supply Pin. VDD should be tied to
5V during programming.
Table 20-2. Comparison of KS88P4504 and KS88C4504 Features
Characteristic
KS88P4504
KS88C4504
Program Memory
4 K byte EPROM
4 K bytes mask ROM
Operating Voltage (VDD)
2.7 V to 5.5 V
2.7 V to 5.5V
OTP Programming Mode
VDD = 5 V, VPP (TEST) = 12.5V
Pin Configuration
80 QFP, 80 TQFP
80 QFP, 80 TQFP
EPROM Programmability
User Program 1 time
Programmed at the factory
OPERATING MODE CHARACTERISTICS
When 12.5 V is supplied to the VPP (TEST) pin of KS88P4504, 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 20-3 below.
Table 20-3. Operating Mode Selection Criteria
VDD
VPP
(TEST)
REG/
MEM
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.


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