NEC PD789488 User Manual page 129

Figure 7-6. Format of 8-Bit Timer Mode Control Register 50 (2/2)
Symbol <7> <6>
TMC50 TCE50 TEG50
TOE50
0 Output disabled
1 Output enabled
Notes 1. Since the count operation is controlled by TCE60 (bit 7 of TMC60) in cascade connection mode,
any setting for TCE50 is ignored.
2. Selection of both edges is valid only in PWM mode. In 8-bit counter mode or cascade connection
mode, even if TEG50 is set to 1, counting occurs at the rising edge.
3. The operation mode selection is set by a combination of the TMC50 and TMC60 registers.
4. Since timer 50 output is disabled in cascade connection mode, set TOE50 to 0.
Cautions 1. In cascade connection mode, the timer 60 output signal is forcibly selected for the count
clock.
2. To manipulate TMC50, follow the setting procedure below.
<1> Set the TM50 count operation to stop.
<2> Set the operation mode and count clock.
<3> The count operation starts.
Remarks 1. f : Main system clock oscillation frequency
X
2. f : Subsystem clock oscillation frequency
XT
3. The parenthesized values apply to operation at f
4. ×:
(2) 8-bit timer mode control register 60 (TMC60)
8-bit timer mode control register 60 (TMC60) is used to control the timer 60 count clock setting and the
operation mode setting.
TMC60 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets this register to 00H.
CHAPTER 7 8-BIT TIMERS 50, 60, AND 61
5 4 3
TCL502 TCL501 TCL500
don't care
User's Manual U15331EJ4V1UD
2 1 <0>
TMD501 TMD500 TOE50
Note 4
Control of timer output
= 5.0 MHz or f
X
Address After reset R/W
FF4DH 00H R/W
= 32.768 kHz.
XT
129