PIC17C75X
FIGURE 13-3: TCON3 REGISTER (ADDRESS: 16h, BANK 7)
U-0
-
R - 0
R - 0
R/W - 0 R/W - 0 R/W - 0 R/W - 0 R/W - 0
R = Readable bit
W = Writable bit
U = Unimplemented bit,
Reads as ‘0’
CA4OVF CA3OVF CA4ED1 CA4ED0 CA3ED1 CA3ED0 PWM3ON
bit7
bit0
-n = Value at POR reset
bit 7:
bit 6:
Unimplemented: Read as ‘0’
CA4OVF: Capture4 Overflow Status bit
This bit indicates that the capture value had not been read from the capture register pair (CA4H:CA4L)
before the next capture event occurred. The capture register retains the oldest unread capture value (last
capture before overflow). Subsequent capture events will not update the capture register with the TMR3
value until the capture register has been read (both bytes).
1 = Overflow occurred on Capture4 registers
0 = No overflow occurred on Capture4 registers
bit 5:
CA3OVF: Capture3 Overflow Status bit
This bit indicates that the capture value had not been read from the capture register pair (CA3H:CA3L)
before the next capture event occurred. The capture register retains the oldest unread capture value (last
capture before overflow). Subsequent capture events will not update the capture register with the TMR3
value until the capture register has been read (both bytes).
1 = Overflow occurred on Capture3 registers
0 = No overflow occurred on Capture3 registers
bit 4-3: CA4ED1:CA4ED0: Capture4 Mode Select bits
00= Capture on every falling edge
01= Capture on every rising edge
10= Capture on every 4th rising edge
11= Capture on every 16th rising edge
bit 2-1: CA3ED1:CA3ED0: Capture3 Mode Select bits
00= Capture on every falling edge
01= Capture on every rising edge
10= Capture on every 4th rising edge
11= Capture on every 16th rising edge
bit 0:
PWM3ON: PWM3 On bit
1 = PWM3 is enabled (The RG5/PWM3 pin ignores the state of the DDRG<5> bit)
0 = PWM3 is disabled (The RG5/PWM3 pin uses the state of the DDRG<5> bit for data direction)
1997 Microchip Technology Inc.
Preliminary
DS30264A-page 93
MICROCHIP [ MICROCHIP ]
