TMP91C824
91C824-17
2008-02-20
7 6 5 4 3 2 1 0
EMCCR0 Bit symbol
PROTECT
−
−
−
−
EXTIN
DRVOSCH DRVOSCL
(00E3H)
Read/Write
R R/W R/W R/W R/W R/W R/W R/W
After reset
0 0 1 0 0 0 1 1
Function
Protect flag
0: OFF
1: ON
Always
write 0
Always
write 1
Always
write 0
Always
write 0
1: External
clock
fc oscillator
driver ability
1: Normal
0: Weak
fs oscillator
driver ability
1: Normal
0: Weak
EMCCR1 Bit symbol
(00E4H)
Read/Write
After reset
Function
EMCCR2 Bit symbol
(00E5H)
Read/Write
After reset
Function
Switching the protect ON/OFF by write to following 1st-KEY,2nd-KEY
1st-KEY: EMCCR1
=
5AH, EMCCR2
=
A5H in succession write
2nd-KEY: EMCCR1
=
A5H, EMCCR2
=
5AH in succession write
EMCCR3 Bit symbol
ENFROM ENDROM
ENPROM
FFLAG
DFLAG PFLAG
(00E6H)
Read/Write
R/W R/W R/W
R/W R/W R/W
After reset
0 0 0 0 0 0
CS1A write
operation flag
CS2B-2G write
operation flag
CS2A write
operation flag
Function
CS1A area
detect control
0: Disable
1: Enable
CS2B-2G
area detect
control
0: Disable
1: Enable
CS2A area
detect control
0: Disable
1: Enable
When reading
0: Not written
1: Written
When writing
0: Clear flag
Note1: In case restarting the oscillator in the stop oscillation state (e.g. Restart the oscillator in
STOP mode), set EMCCR0<DRVOSCH>, <DRVOSCL>
=
”1”.
Note2: In case of Vcc
=
2 V
±
10% use, fixed to EMCCR0<DRVOSCH>
=
1.
Figure 3.3.5 SFR for Noise Reduction