參數(shù)資料
型號(hào)： KS88C4504
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： 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
中文描述： 新SAM87RC家庭的8位單芯片CMOS微控制器提供了快速，高效的CPU，一個(gè)廣泛的集成外設(shè)，以及各種馬航
文件頁數(shù)： 34/36頁
文件大?。?/td> 293K
代理商： KS88C4504
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
V
PP
11
I
Serial Clock Pin (Input Only Pin)
EA
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
V
DD1
/V
SS1
RESET
V
DD
/V
SS
19
I
Chip Initialization
Logic Power Supply Pin. VDD should be tied to
5V during programming.
12/13
I
Table 20-2. Comparison of KS88P4504 and KS88C4504 Features
Characteristic
KS88P4504
KS88C4504
Program Memory
Operating Voltage (V
DD
)
4 K byte EPROM
4 K bytes mask ROM
2.7 V to 5.5 V
2.7 V to 5.5V
OTP Programming Mode
V
DD
= 5 V, V
PP
(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 V
PP
(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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