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TMP92CZ26A
92CZ26A-25
7 6 5 4 3 2 1 0
Bit symbol
PROTECT
−
EXTIN DRVOSCH DRVOSCL
Read/Write R R/W R/W R/W R/W
After reset 0 0 0 1 1
Function
Protect flag
0: OFF
1: ON
Always
write “0”.
1: External
clock
fc oscillator
drive ability
1: NORMAL
0: WEAK
fs oscillator
drive ability
1: NORMAL
0: WEAK
Bit symbol
Read/Write
After reset
Function
Bit symbol
Read/Write
After reset
Function
Switching the protect ON/OFF by write to following 1
st
-KEY,2
nd
-KEY
1
st
-KEY: EMCCR1=5AH,EMCCR2=A5H in succession write
2
nd
-KEY: EMCCR1=A5H,EMCCR2=5AH in succession write
Note: In case restarting the oscillator in the stop oscillation state (e.g. Restart the oscillator in STOP mode), set
EMCCR0<DRVOSCH>, <DRVOSCL>
=”1”.
Figure 3.3.4 SFR for system clock
EMCCR0
(10E3H)
EMCCR1
(10E4H)
EMCCR2
(10E5H)