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參數(shù)資料
| 型號： | KS57C21418 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 元件分類： | 通用總線功能 |
| 英文描述： | The KS57C21408/C21418/P21408 is a SAM47 core-based 4-bit CMOS single-chip microcontroller. It has a timer/counter and LCD drivers. |
| 中文描述： | 該KS57C21408/C21418/P21408是SAM47核心的4位CMOS單芯片微控制器。它有一個計時器/計數(shù)器和LCD驅(qū)動器。 |
| 文件頁數(shù)： | 27/30頁 |
| 文件大小： | 238K |
| 代理商： | KS57C21418 |
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KS57C21408/C21418/P21408
KS57P21408 OTP
15-3
Table 15-1. Descriptions of Pins Used to Read/Write the EPROM
Main Chip
Pin Name
P3.1
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
I
Logic power supply pin. VDD should be tied to
+5 V during programming.
Pin Name
SDAT
Pin No.
13
Function
P3.0
TEST
SCLK
V
PP
(TEST)
14
19
RESET
V
DD
/ V
SS
RESET
V
DD
/ V
SS
22
15/16
Table 15-2. Comparison of KS57P21408 and KS57C21408/C21418 Features
Characteristic
Program Memory
Operating Voltage (V
DD
)
OTP Programming Mode
KS57P21408
KS57C21408
8 Kbyte EPROM
1.8 V to 5.5 V
8 Kbyte mask ROM
1.8 V to 5.5V
V
DD
= 5 V, V
PP
(TEST)=12.5V
100 QFP
User Program 1 time
Pin Configuration
EPROM Programmability
100 QFP
Programmed at the factory
OPERATING MODE CHARACTERISTICS
When 12.5 V is supplied to the VPP(TEST) pin of the KS57P21408, 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 15-3 below.
Table 15-3. Operating Mode Selection Criteria
VDD
VPP
(TEST)
5 V
12.5 V
12.5 V
12.5 V
REG/
MEM
0
0
0
1
ADDRESS
(A15-A0)
0000H
0000H
0000H
0E3FH
R/W
MODE
5 V
1
0
1
0
EPROM read
EPROM program
EPROM verify
EPROM read protection
NOTE
:
"0" means Low level; "1" means High level.
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