CHAPTER 5 CLOCK GENERATOR
Preliminary User’s Manual U16315EJ1V0UD
110
(5) Oscillation stabilization time counter status register (OSTC)
This is the status register of the X1 input clock oscillation stabilization time counter. If the Ring-OSC clock is used
as the CPU clock, the X1 input clock oscillation stabilization time can be checked.
OSTC can be read by a 1-bit or 8-bit memory manipulation instruction.
When reset is released (reset by RESET input, POC, LVI, clock monitor, and WDT), the STOP instruction,
MSTOP = 1, and MCC = 1 clear OSTC to 00H.
Figure 5-7. Format of Oscillation Stabilization Time Counter Status Register (OSTC)
Address: FFA3H After reset: 00H R
Symbol
7
6
5
4
3
2
1
0
OSTC
0
0
0
MOST11
MOST13
MOST14
MOST15
MOST16
MOST11
MOST13
MOST14
MOST15
MOST16
Oscillation stabilization time status
1
0
0
0
0
2
11
/f
XP
min. (204.8
µ
s min.)
1
1
0
0
0
2
13
/f
XP
min. (819.2
µ
s min.)
1
1
1
0
0
2
14
/f
XP
min. (1.64 ms min.)
1
1
1
1
0
2
15
/f
XP
min. (3.27 ms min.)
1
1
1
1
1
2
16
/f
XP
min. (6.55 ms min.)
Caution
After the above time has elapsed, the bits are set to 1 in order from MOST11 and
remain 1.
Remarks 1.
Values in parentheses are for operation with f
XP
= 10 MHz.
2.
f
XP
: X1 input clock oscillation frequency
Содержание 78K0/KD1 Series
Страница 2: ...Preliminary User s Manual U16315EJ1V0UD 2 MEMO ...
Страница 444: ...Preliminary User s Manual U16315EJ1V0UD 444 MEMO ...