gc80c510 CORERIVER Semiconductor, gc80c510 Datasheet - Page 198

• Manufacturer Part Number: gc80c510
• Description: Eprom/rom 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

13.21 STATUS (C5h) : Crystal Status Register
Symbol
Bit No.
XTUP
-
Reserved.
Crystal Oscillator Warm-up Status.
warm-up, and represents the system clock of the crystal oscillator is stable(1) or not(0).
bit is set to 1 following a crystal stabilization by H/W.
7
This bit indicates whether the CPU crystal oscillator has completed the 65,536 cycle
This bit is cleared by H/W when Power-on Reset, during Power-down wake-up. This
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6
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5
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XTUP
R(0)
4
Description
3
-
Appendix B: SFR description
2
-
1
-
0
-