TMP91C824
91C824-240
(5)
Clock Gear (2/2)
Symbol
Name
Address
7
6
5
4
3
2
1
0
PROTECT
TA3LCD E
EXTIN
DRVOSCH
DRVOSCL
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
1
0
0
0
1
1
EMCCR0
EMC
Control
Register 0
E3H
Protection
flag
0: OFF
1: ON
LCDC
Source clk
0: 32KHz
1: TA3OUT
Always write
1
Always
write 0
e
1: fc is
external
clock.
fc oscillator
drivability
1: Normal
0: Weak
fs oscillator
drivability
1: Normal
0: Weak
EMCCR1
EMC
Control
Register 1
E4H
EMCCR2
EMC
Control
Register 2
E5H
Follows: 1
ST
-KEY and 2
ND
-KEY needs to lock
Continuation writes in 1
ST
-KEY:EMCCR1=5AH,EMCCR2=A5H.
Continuation writes in 2
ND
-KEY:EMCCR1=A5H, EMCCR2=5AH.
ENFROM
ENDROM
ENPROM
FFLAG
DFLAG
PFLAG
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
CS1A
Write
operation flag
CS2B-2G
Write
operation flag
CS2A
Write
operation flag
EMCCR3
EMC
Control
Register 3
E6H
CS1A
area detect
enable
0:disable
1:enable
CS2B-2G
area detect
Enable
0:disable
1:enable
CS2A
area detect
enable
0:disable
1:enable
When reading When writing
“ 0” : not written “ 0” : clear flag
“ 1” : written
(6)
DFM (clock doubler)
Symbol
Name
Address
7
6
5
4
3
2
1
0
ACT1
ACT0
DLUPFG
DLUPTM
R/W
R/W
R
R/W
0
0
0
0
DFM
LUP
fFPH
00 STOP STOP fOSCH
01 RUN RUN
fOSCH
10 RUN STOP
fDFM
Lock-up falg
0: End LUP
1: Do not end
LUP
Lock-up time
0: 2
12/
fOSCH
1: 2
10/
fOSCH
DFMCR0
DFM
Control
Register 0
E8H
11 RUN STOP fOSCH
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
1
0
0
1
1
DFMCR1
DFM
Control
Register 1
E9H
DFM correction
Input frequency 4 ~ 6.75MHz (@2.7-3.6V) : write 0BH
Input frequency 2 ~ 2.5MHz (@2.0V ±10%) : write 1BH