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Section 11 Multi-Function Timer Pulse Unit 2
Page 644 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
(26) Operation when Error Occurs during Reset-Synchronized PWM Mode Operation, and
Operation is Restarted in Normal Mode
Figure 11.140 shows an explanatory diagram of the case where an error occurs in reset-
synchronized PWM mode and operation is restarted in normal mode after re-setting.
1
RESET
2
TOCR
3
TMDR
(RPWM)
5
PFC
(MTU2)
4
TOER
(1)
6
TSTR
(1)
7
Match
8
Error
occurs
9
PFC
(PORT)
10
TSTR
(0)
11
TMDR
(normal)
12
TIOR
(1 init
0 out)
13
PFC
(MTU2)
14
TSTR
(1)
MTU2 module output
TIOC3A
TIOC3B
TIOC3D
Port output
PE9
PE8
PE11
High-Z
High-Z
High-Z
Figure 11.140 Error Occurrence in Reset-Synchronized PWM Mode,
Recovery in Normal Mode
1. After a reset, the module output is low and ports are in the high-impedance state.
2. Select the reset-synchronized PWM output level and cyclic output enabling/disabling with
TOCR.
3. Set reset-synchronized PWM.
4. Enable channel 3 and 4 output with TOER.
5. Set the multi-function timer pulse unit 2 output with the general I/O port.
6. The count operation is started by TSTR.
7. The reset-synchronized PWM waveform is output on compare-match occurrence.
8. An error occurs.
9. Set port output with the general I/O port and output the inverse of the active level.
10. The count operation is stopped by TSTR. (This module outputs the same value as the reset-
synchronized PWM output initial value.)
11. Set normal mode. (The positive phase output from this module is low, and negative phase
output is high.)
12. Initialize the pins with TIOR.
13. Set the multi-function timer pulse unit 2 output with the general I/O port.
14. Operation is restarted by TSTR.