Datasheet

78K0/Ix2 CHAPTER 6 16-BIT TIMERS X0 AND X1
R01UH0010EJ0500 Rev.5.00 244
Feb 28, 2012
6.7 High-Impedance Output Control Function
The high-impedance output control function changes the outputs of 16-bit timers X0 and X1 to a high-impedance state
at the generation of an external interrupt input (INTP0) or comparator output (INTCMP0 to INTCMP2) and executes
functions such as the PWM output emergency stop function.
6.7.1 Configuration of High-Impedance Output Controller
The high-impedance output control circuit includes the following hardware.
Table 6-4. Configuration of High-Impedance Output Control Controller
Item Configuration
Control registers
High-impedance output function enable register (HIZTREN)
High-impedance output mode select register (HIZTRS)
High-impedance output function control register 0 (HZA0CTL0)
Figure 6-55. Block Diagram of High-Impedance Output Controller
TMX0
INTP0
HIZ
TREN0
Output
decoder
HZA0
DCF0
HZA0
DCC0
HZA0
DCT0
HZA0
DCP0
HZA0
DCN0
HZA0
DCM0
HZA0
DCE0
HIZ
PTS0
HIZ
PTS1
HIZ
PTS2
HIZ
PTS3
HIZ
TRS0
HIZ
TRS1
PM34
P34/TOX11
PM33
P33/TOX10
PM32
P32/TOX01
PM31
P31/TOX00
TMX1
High-impedance output
function enable register
(HIZTREN)
High-impedance output
mode select register
(HIZTRS)
High-impedance output
function enable register
(HZA0CTL0)
Selector
Comparator 0 output
Comparator 1 output
Comparator 2 output
Internal bus
Output latch
(P31)
Output latch
(P32)
Output latch
(P33)
Output latch
(P34)
High-impedance
output
controller