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参数资料
| 型号： | S3C9678XX-AQ |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 6 MHz, MICROCONTROLLER, PDIP42 |
| 封装： | 0.600 INCH, SDIP-42 |
| 文件页数： | 17/26页 |
| 文件大小： | 162K |
| 代理商： | S3C9678XX-AQ |
S3C9674/C9678/P9678 (Preliminary Spec)
S3P9678 OTP
15-3
Table 15-1. Descriptions of Pins Used to Read/Write the EPROM
Main Chip
During Programming
Pin Name
Pin No.
I/O
Function
P2.6
SDAT
9 (3)
I/O
Serial Data Pin (Output when reading, Input
when writing) Input and Push-pull Output Port
can be assigned
P2.7
SCLK
10 (4)
I/O
Serial Clock Pin (Input Only Pin)
TEST
15 (9)
I
Chip Initialization and EPROM Cell Writing
Power Supply Pin (Indicates OTP Mode
Entering) When writing 12.5 V is applied and
when reading.
RESET
18 (12)
I
0 V: OTP write and test mode
5 V: Operating mode
V
DD / VSS
V
DD / VSS
11(5)/12(6)
–
Logic Power Supply Pin.
NOTE: ( ) means 44 QFP package.
Table 15-2. Comparison of S3P9678 and S3C9674/C9678 Features
Characteristic
S3P9678
S3C9674/C9678
Program Memory
8-Kbyte EPROM
8-Kbyte mask ROM
Operating Voltage (V
DD)
4.0 V to 5.25 V
OTP Programming Mode
V
DD = 5 V, VPP (RESET) = 12.5 V
Pin Configuration
42 SDIP/44 QFP
EPROM Programmability
User Program 1 time
Programmed at the factory
OPERATING MODE CHARACTERISTICS
When 12.5 V is supplied to the V
PP (RESET) pin of the S3P9678, 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
(RESET)
REG/
MEM
ADDRESS
(A15-A0)
R/W
MODE
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.
相关PDF资料 |
PDF描述 |
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