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CHAPTER 16 8-/16-BIT PPG TIMER
16.3.1 PPGC Operation Mode Control Register (PPGCC)
The PPGC operation mode control register (PPGC0) provides the following settings for
the operation of 8-/16-bit PPG timer C:
• Enabling or disabling operation of 8-/16-bit PPG timer C
• Switching between pin functions (enabling or disabling pulse output)
• Enabling or disabling underflow interrupt
• Setting underflow interrupt request flag
This section explains the PPGCC function only. The PPGCE has the same function as
the PPGCC, and the 8-/16-bit PPPG timer C and E is set.
■ PPGC Operation Mode Control Register (PPGCC)
Figure 16.3-2 PPGC Operation Mode Control Register (PPGCC)
453210
7
6
−−− R/WR/WR/W
R/W
0
X
0
0
0
X
X
1
B
R/W
PEN0 PE0 PIE0 PUF0
Re-
served
Address:
chC PPGCC 000048
H
Other channel:
chE PPGCE 00004C
H
Reset value
bit 0
Re-
served
Reserved bit
1 Always set to "1"
bit 3
PUF0
Underflow generation flag bit
Read Write
0
No underflow Clears PUF0 bit
1
Underflow
No effect
bit 4
PIE0 Underflow interrupt enable bit
0 Interrupt request disable
1 Interrupt request enable
bit 5
PE0 PPG0 pin output enable bit
0
General-purpose I/O port
(pulse output disable)
1
PPGC output (pulse output enable)
bit 7
PEN0 PPG0 operation enable bit
0
Couting disable
(holds "L" level output)
1 Counting enable
R/W : Read/Write
W: Write only
X : Indeterminate
− : Undefined
: Reset value