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GMS81C2012 Scheda tecnica(PDF) 89 Page - Hynix Semiconductor

Il numero della parte GMS81C2012
Spiegazioni elettronici  HYUNDAI MICRO ELECTRONICS 8-BIT SINGLE-CHIP MICROCONTROLLERS
PDF  107 Pages
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Produttore elettronici  HYNIX [Hynix Semiconductor]
Homepage  http://www.skhynix.com/kor/main.do
Logo HYNIX - Hynix Semiconductor

GMS81C2012 Scheda tecnica(HTML) 89 Page - Hynix Semiconductor

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HYUNDAI MicroElectronics
GMS81C2012/GMS81C2020
MAR. 2000 Ver 1.00
89
21. OTP PROGRAMMING
21.1 DEVICE CONFIGURATION AREA
The Device Configuration Area can be programmed or left
unprogrammed to select device configuration such as secu-
rity bit.
Sixteen memory locations (7030H ~ 703FH) are designated
as Customer ID recording locations where the user can
store check-sum or other customer identification numbers.
This area is not accessible during normal execution but is
readable and writable during program / verify.
Figure 21-1 Device Configuration Area
DEVICE
7030H
7030H
703FH
703FH
ID
CONFIG
CONFIGURATION
AREA
7031H
ID
7032H
ID
7033H
ID
7034H
ID
7035H
ID
7036H
ID
7037H
ID
7038H
ID
7039H
ID
703AH
ID
703BH
ID
703CH
ID
703DH
ID
703EH
ID
7
6543210
RCO
INITIAL VALUE: -000 -0-0B
ADDRESS: 703FH
CONFIG
LOCK
Code Protect
0 : Allow Code Read Out
1 : Lock Code Read Out
PFD Level Selection
00: PFD = 2.7V
01: PFD = 2.7V
External RC OSC Selection
0: Crystal or Resonator Oscillator
1: External RC Oscillator
PFS0
PFS1
R7X
10: PFD = 3.0V
11: PFD = 2.4V
R74, R75 Port Selection
0 : Sub Clock
1 : R74, R75



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