www.DataSheet4U.com
CHAPTER 20 STANDBY FUNCTION
485
20.2 Standby Function Operations
20.2.1 HALT mode
(1) HALT mode set and operating status
The HALT mode is set by executing the HALT instruction. It can be set with the main system clock or the
subsystem clock.
The operating status in the HALT mode is described below.
Table 20-1. HALT Mode Operating Status
HALT Mode
When HALT instruction is executed during
When HALT instruction is executed during
Setting
main system clock oscillation
subsystem clock oscillation
Item
Without subsystem
With subsystem
When main system
When main system
clock
Note 1
clock
Note 2
clock oscillation continues
clock oscillaton stops
Clock generator
Both main system clock and subsystem clock can be oscillated.
Clock supply to the CPU stops.
CPU
Operation stop.
Port (output latch)
Status before HALT instruction execution is held.
16-bit timer/event counter
Operation enabled.
Operation stop.
8-bit timer/event counter
Operation enabled.
Operation enabled
when TI1 and TI2 are
selected for the count
clock.
Watchdog timer
Operation enabled.
Operation stop.
A/D converter
Operation enabled.
Operation stop.
Watch timer
Operation enabled
Operation enabled.
Operation enabled
when f
X
/2
8
is selected
when f
XT
is selected
for the count clock.
for the count clock.
Serial
Other than auto- Operation enabled.
Operation enabled
Interface
matic transmit/
when external SCK is
receive function
selected.
Automatic
Operation stop.
transmit/receive
function
External
INTP0
Operation enabled when the clock (f
X
/2
6
and f
X
/2
7
) for the peripheral
Operation stop.
interrupt
hardware are selected as sampling clock.
INTP1 to INTP3 Operation enabled.
Bus line in AD0 to AD7
High-impedance
External
A8 to A15
Status before HALT instruction execution is held.
Expansion ASTB
Low level
WR, RD
High level
WAIT
High-impedance
Notes
1.
Includes case when an external clock is not supplied in the subsystem clock.
2.
Includes case when an external clock is supplied in the subsystem clock.
Содержание 78014Y Series
Страница 2: ...www DataSheet4U com 2 MEMO...
Страница 8: ...www DataSheet4U com 8 MEMO...
Страница 22: ...www DataSheet4U com 22 MEMO...
Страница 30: ...www DataSheet4U com 30 MEMO...
Страница 34: ...www DataSheet4U com 34 MEMO...
Страница 62: ...www DataSheet4U com CHAPTER 2 OUTLINE PD78014Y Subseries 62 MEMO...
Страница 78: ...www DataSheet4U com CHAPTER 3 PIN FUNCTION PD78014 Subseries 78 MEMO...
Страница 94: ...www DataSheet4U com CHAPTER 4 PIN FUNCTION PD78014Y Subseries 94 MEMO...
Страница 170: ...www DataSheet4U com CHAPTER 7 CLOCK GENERATOR 170 MEMO...
Страница 222: ...www DataSheet4U com CHAPTER 9 8 BIT TIMER EVENT COUNTER 222 MEMO...
Страница 230: ...www DataSheet4U com CHAPTER 10 WATCH TIMER 230 MEMO...
Страница 262: ...www DataSheet4U com CHAPTER 14 A D CONVERTER 262 MEMO...
Страница 318: ...www DataSheet4U com CHAPTER 15 SERIAL INTERFACE CHANNEL 0 PD78014 Subseries 318 MEMO...
Страница 408: ...www DataSheet4U com CHAPTER 16 SERIAL INTERFACE CHANNEL 0 PD78014Y Subseries 408 MEMO...
Страница 446: ...www DataSheet4U com CHAPTER 17 SERIAL INTERFACE CHANNEL 1 446 MEMO...
Страница 472: ...www DataSheet4U com CHAPTER 18 INTERRUPT FUNCTIONS AND TEST FUNCTION 472 MEMO...
Страница 502: ...www DataSheet4U com CHAPTER 22 PD78P014 78P014Y 502 MEMO...
Страница 520: ...www DataSheet4U com CHAPTER 23 INSTRUCTION SET 520 MEMO...