Toshiba TLCS-900/H1 Series Manual page 23

Bit symbol PROTECT
EMCCR0
(10E3H)
Read/Write
Reset state
Function Protect flag
0: OFF
1: ON
EMCCR1 Bit symbol
(10E4H)
Read/Write
Reset state
Function
Bit symbol
EMCCR2
(10E5H)
Read/Write
Reset state
Function
Note: When restarting the oscillator from the stop oscillation state (e.g. restarting the oscillator in STOP mode), set
EMCCR0<DRVOSCH>, <DRVOSCL>="1".
7 6 5
R
0
Switch the protect ON/OFF by writing the following to 1st-KEY, 2nd-KEY
1st-KEY: write in sequence EMCCR1 = 5AH, EMCCR2 = A5H
2nd-KEY: write in sequence EMCCR1 = A5H, EMCCR2 = 5AH
Figure 3.3.4 SFR for System Clock
92CH21-21
4 3 2
EXTIN
R/W
0
1: External
clock
TMP92CH21
1 0
DRVOSCH DRVOSCL
R/W R/W
1 1
fc oscillator fs oscillator
driver ability driver ability
1: Normal 1: Normal
0: Weak 0: Weak
2009-06-19