TMP91C630_05 Datasheet, PDF (16/208 Pages) Toshiba Semiconductor – Original CMOS 16-Bit Microcontroller

TMP91C630
3.4.2 SFRs
SYSCR0
(00E0H)
Bit symbol
Read/Write
After reset
Function
7
−
1
Always
write 1
7
SYSCR1
(00E1H)
Bit symbol
Read/Write
After reset
Function
7
SYSCR2
(00E2H)
Bit symbol
Read/Write
After reset
Function
6
−
0
Always
write 0
6
6
−
R/W
0
Always
write 0
5
−
1
Always
write 1
4
−
0
Always
write 0
3
−
R/W
0
Always
write 0
2
−
0
Always
write 0
1
PRCK1
0
PRCK0
0
0
Select prescaler clock
00: f_FPH
01: Reserved
10: fc/16
11: Reserved
5
4
3
2
1
0
−
0
Always
write 0
GEAR2
GEAR1
GEAR0
R/W
0
0
0
Select gear value of high frequency (fc)
000: fc
001: fc/2
010: fc/4
011: fc/8
100: fc/16
101: (Reserved)
110: (Reserved)
111: (Reserved)
5
4
3
2
1
0
WUPTM1 WUPTM0
R/W
R/W
1
0
Warm-up timer
00: Reserved
01: 2⁸/Input frequency
10: 2¹⁴/Input frequency
11: 2¹⁶/Input frequency
HALTM1 HALTM0
R/W
R/W
1
1
HALT mode
00: Reserved
01: STOP mode
10: IDLE1 mode
11: IDLE2 mode
DRVE
R/W
0
1: Drive the
pin during
STOP
mode
Figure 3.4.3 SFR for System Clock
91C630-14
2005-11-15