mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 235

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MCFLG — 16-Bit Modulus Down-Counter FLAG Register
MC68HC912DG128 — Rev 3.0
MOTOROLA
RESET:
MCZF
BIT 7
0
6
0
0
MCPR1, MCPR0 — Modulus Counter Prescaler select
Read: any time
Write: Only for clearing bit 7
MCZF — Modulus Counter Underflow Interrupt Flag
Freescale Semiconductor, Inc.
These two bits specify the division rate of the modulus counter
prescaler.
The newly selected prescaler division rate will not be effective until a
load of the load register into the modulus counter count register
occurs.
The flag is set when the modulus down-counter reaches $0000.
Writing a1 to this bit clears the flag (if TFFCA=0). Writing a zero has
no effect.
Any access to the MCCNT register will clear the MCZF flag in this
register when TFFCA bit in register TSCR($86) is set.
For More Information On This Product,
5
0
0
Go to: www.freescale.com
Enhanced Capture Timer
MCPR1
4
0
0
0
0
1
1
POLF3
MCPR0
3
0
0
1
0
1
POLF2
2
0
Prescaler division
rate
16
1
4
8
POLF1
1
0
Enhanced Capture Timer
POLF0
BIT 0
0
Timer Registers
Technical Data
$00A7
235