UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 116

• Manufacturer Part Number: UPD78F0413GA-GAM-AX
• Description: 8BIT UC, 32K FLASH, 1KB RAM, LCD
• Manufacturer: NEC

Specifications of UPD78F0413GA-GAM-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 30
• Ram Memory Size: 1024Byte
• Cpu Speed: 10MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 32KB
• Oscillator Type: External, Internal

(7) Oscillation stabilization time counter status register (OSTC)
116
This is the register that indicates the count status of the X1 clock oscillation stabilization time counter. When X1
clock oscillation starts with the internal high-speed oscillation clock or subsystem clock used as the CPU clock,
the X1 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, and WDT), the STOP instruction and MSTOP (bit 7 of
MOC register) = 1 clear OSTC to 00H.
Address: FFA3H
Symbol
OSTC
Figure 5-7. Format of Oscillation Stabilization Time Counter Status Register (OSTC)
Remark f
Cautions 1. After the above time has elapsed, the bits are set to 1 in order from MOST11 and
MOST
11
1
1
1
1
1
7
0
After reset: 00H
MOST
2. The oscillation stabilization time counter counts up to the oscillation
3. The X1 clock oscillation stabilization wait time does not include the time until
X
13
: X1 clock oscillation frequency
0
1
1
1
1
remain 1.
stabilization time set by OSTS. If the STOP mode is entered and then released
while the internal high-speed oscillation clock is being used as the CPU clock,
set the oscillation stabilization time as follows.
Note, therefore, that only the status up to the oscillation stabilization time set by
OSTS is set to OSTC after STOP mode is released.
clock oscillation starts (“a” below).
6
0
MOST
14
X1 pin voltage
waveform
0
0
1
1
1
Desired OSTC oscillation stabilization time
set by OSTS
R
CHAPTER 5 CLOCK GENERATOR
MOST
15
0
0
0
1
1
User’s Manual U18698EJ1V0UD
5
0
STOP mode release
MOST
16
0
0
0
0
1
MOST11
4
2
2
2
2
2
a
11
13
14
15
16
/f
/f
/f
/f
/f
X
X
X
X
X
min.
min.
min.
min.
min.
MOST13
3
Oscillation stabilization time status
1.02 ms min.
4.10 ms min.
8.19 ms min. 3.27 ms min. 1.64 ms min.
16.38 ms min. 6.55 ms min. 3.27 ms min.
32.77 ms min. 13.11 ms min. 6.55 ms min.
f
X
= 2 MHz
MOST14
2
Oscillation stabilization time
409.6 s min. 204.8 s min.
1.64 ms min.
f
X
MOST15
= 5 MHz
1
819.2 s min.
f
X
MOST16
= 10 MHz
0