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參數(shù)資料
| 型號： | GMS97C54H |
| 廠商： | HYNIX SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| 中文描述： | 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數(shù)： | 31/39頁 |
| 文件大小： | 254K |
| 代理商： | GMS97C54H |
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8-Bit CMOS Microcontorller
GMS97C1051/L1051
HYUNDAI MicroElectronics
31
Lock Bit Protection Modes
Program Lock Bits
LB1
Protection Type
1
U
U
No program lock features.
Further programming of the
EPROM is disabled.
Same as mode 2, also verify
is disabled.
2
P
U
3
P
P
Reading the Signature Bytes :
The signature bytes are read by the same procedure as a
normal verification of locations 000H and 001H, except
that P3.5 and P3.7 need to be pulled to a logic low.
Manufacturer ID:
(00H) = E0H ( Indicates manufactured by HEI )
Device ID:
(01H) = 16H ( Indicates GMS97C1051/L1051 )
U : unprogrammed, P : programmed
EPROM Programming Modes
Table 8
. EPROM Programming Modes
Mode
RST
P3.2/PROG
P3.3
P3.4
P3.5
P3.7
Read Signature
1
1
0
0
0
0
Program Code Data
Vpp
0
1
1
1
Verify Code Data
1
1
0
0
1
1
Pgm encryption table
Vpp
0
1
0
1
Pgm encryption bit1
Vpp
1
1
1
1
Pgm encryption bit
Vpp
1
1
0
0
Notes:1. '0' = Valid low, '1' = Valid high for that pin.
2. Vpp = 12.75 V
3. Vcc = 5 V
10 % during programming
and verification.
0.25 V
4. P3.2/
PROG
receives 10 programming pulses
while Vpp is held at 12.75V. Each program-
ming pulse is low for 100uS (
and high for a minimum of 10uS.
10uS)
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