NEC 78K0 User Manual page 132

Figure 6-7. Format of 16-Bit Timer Output Control Register 00 (TOC00)
Address: FFBDH After reset: 00H
Symbol 7
TOC00 0
OSPT00
0
1
OSPE00
0
1
TOC004
0
1
LVS00
0
0
1
1
TOC001
0
1
TOE00
0
1
Note The one-shot pulse output mode operates correctly only in the free-running mode and the mode in which
clear & start occurs at the TI000 valid edge. In the mode in which clear & start occurs on a match between
the TM00 register and CR000 register, one-shot pulse output is not possible because an overflow does not
occur.
Cautions 1. Timer operation must be stopped before setting other than TOC004.
2. If LVS00 and LVR00 are read, 0 is read.
3. OSPT00 is automatically cleared after data is set, so 0 is read.
4. Do not set OSPT00 to 1 other than in one-shot pulse output mode.
5. A write interval of two cycles or more of the count clock selected by prescaler mode register
00 (PRM00) is required to write to OSPT00 successively.
6. Do not set LVS00 to 1 before TOE00, and do not set LVS00 and TOE00 to 1 simultaneously.
132
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
R/W
<6> <5>
OSPT00 OSPE00 TOC004
One-shot pulse output trigger control via software
No one-shot pulse trigger
One-shot pulse trigger
One-shot pulse output operation control
Successive pulse output mode
Note
One-shot pulse output mode
Timer output F/F control using match of CR010 and TM00
Disables inversion operation
Enables inversion operation
LVR00
0 No change
1 Timer output F/F reset (0)
0 Timer output F/F set (1)
1 Setting prohibited
Timer output F/F control using match of CR000 and TM00
Disables inversion operation
Enables inversion operation
Disables output (output fixed to level 0)
Enables output
User's Manual U16227EJ2V0UD
4 <3> <2>
LVS00 LVR00
Timer output F/F status setting
Timer output control
1 <0>
TOC001 TOE00