MC80F0204 Datasheet, PDF (106/126 Pages) List of Unclassifed Manufacturers – 8-BIT SINGLE-CHIP MICROCONTROLLERS

MC80F0104/0204
Preliminary
23. Device Configuration Area
The Device Configuration Area can be programmed or left
unprogrammed to select device configuration such as
POR, ONP, CLK option and security bit. This area is not
accessible during normal execution but is readable and
writable during FLASH program / verify mode.
76
5
4
3
2
1
0
Configuration Option Bits ONP OFP LOCK POR R35EN CLK2 CLK1 CLK0
ADDRESS: 20FF_H
INITIAL VALUE: 00_H
Oscillation confuguration
000 : IN4MCLK (Internal 4MHz Oscillation & R33/R34 Enable)
001 : IN2MCLK (Internal 2MHz Oscillation & R33/R34 Enable)
010 : EXRC (External R/RC Oscillation & R34 Enable)
011 : X-tal (Crystal or Resonator Oscillation)
100 : IN4MCLKXO (internal 4MHz Oscillation & R33 Enable
& XOUT = f_SYS ÷ 4)
101 : IN2MCLKXO (internal 2MHz Oscillation & R33 Enable
& XOUT = f_SYS ÷ 4)
110 : EXRCXO (External R/RC Oscillation & XOUT = f_SYS ÷ 4)
111 : Prohibited
RESET/R35 Port configuration
0 : R35 Port Disable (Use RESET)
1 : R35 Port Ensable (Disable RESET)
POR Use
0 : Disable POR Reset
1 : Ensable POR Reset
Security Bit
0 : Enable reading User Code
1 : Disable reading User Code
OFP use
0 : Disable OFP (Clock Changer)
1 : Enable OFP (Clock Changer)
ONP disable
0 : Enable ONP (Enable OFP, Internal 4MHz/2MHz oscillation)
1 : Disable ONP (Disable OFP, Internal 4MHz/2MHz oscillation)
Figure 23-1 Device Configuration Area
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Mar. 2005 Ver 0.2