R8C1A Datasheet, PDF (150/339 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER R8C FAMILY / R8C/1x SERIES

R8C/1A Group, R8C/1B Group
14. Timers
Timer Z Mode Register
b7 b6 b5 b4 b3 b2 b1 b0
1100000
Symbol
TZMR
Bit Symbol
Address
0080h
Bit Name
After Reset
00h
Function
RW
—
Reserved bits
Set to 0.
(b3-b0)
RW
TZMOD0 Timer Z operating mode bit b5 b4
RW
TZMOD1
1 0 : Programmable one-shot generation mode
RW
Timer Z w rite control bit Set to 1 in programmable one-shot generation
TZWC
mode.⁽¹⁾
RW
Timer Z count start flag⁽²⁾ 0 : Stops counting.
TZS
1 : Starts counting.
RW
NOTES :
1. When the TZS bit is set to 1 (count starts), the count value is w ritten to the reload register only. When the TZS bit is
set to 0 (count stops), the count value is w ritten to both reload register and counter.
2. Refer to 14.2.5 Notes on Tim er Z for precautions regarding the TZS bit.
Timer Z Waveform Output Control Register
b7 b6 b5 b4 b3 b2 b1 b0
00000
Symbol
PUM
Bit Symbol
Address
0084h
Bit Name
After Reset
00h
Function
RW
—
Reserved bits
Set to 0.
(b4-b0)
RW
Timer Z output level latch 0 : Outputs one-shot pulse “H”.
TZOPL
Outputs “L” w hen the timer is stopped.
1 : Outputs one-shot pulse “L”.
RW
Outputs “H” w hen the timer is stopped.
_____
_____
INOSTG ^{INT0 pin one-shot trigger}
0 : INT0 pin one-shot trigger disabled
_____
RW
control bit⁽¹⁾
1 : INT0 pin one-shot trigger enabled
_____
INOSEG ^{INT0 pin one-shot trigger}
polarity select bit⁽²⁾
0 : Falling edge trigger
1 : Rising edge trigger
RW
NOTES :
1. Set the INOSTG bit to 1 after the INT0EN bit in the INTEN register and the INOSEG bit in the PUM
_____
register are set. When setting the INOSTG bit to 1 (INT0 pin one-shot trigger enabled), set the INT0F0 to
_____
INT0F1 bits in the INT0F register. Set the INOSTG bit to 0 (INT0 pin one-shot trigger disabled) after the
TZS bit in the TZMR register is set to 0 (count stops).
2. The INOSEG bit is enabled only w hen the INT0PL bit in the INTEN register is set to 0 (one edge).
Figure 14.19 Registers TZMR and PUM in Programmable One-Shot Generation Mode
Rev.1.30 Dec 08, 2006 Page 134 of 315
REJ09B0252-0130