PIC10F200T-E/P(2014) View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC10F200T-E/P Datasheet PDF : 88 Pages
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PIC10F200/202/204/206
FIGURE 9-9:
BROWN-OUT
PROTECTION CIRCUIT 3
VDD
MCP809 Bypass
VSS
Capacitor
VDD
RST
VDD
MCLR
PIC10F20X
Note:
This brown-out protection circuit employs
Microchip Technology’s MCP809
microcontroller supervisor. There are
seven different trip point selections to
accommodate 5V to 3V systems.
9.9 Power-down Mode (Sleep)
A device may be powered-down (Sleep) and later
powered-up (wake-up from Sleep).
9.9.1 SLEEP
The Power-down mode is entered by executing a
SLEEP instruction.
If enabled, the Watchdog Timer will be cleared but
keeps running, the TO bit (STATUS<4>) is set, the PD
bit (STATUS<3>) is cleared and the oscillator driver is
turned off. The I/O ports maintain the status they had
before the SLEEP instruction was executed (driving
high, driving low or high-impedance).
Note: A Reset generated by a WDT time-out
does not drive the MCLR pin low.
For lowest current consumption while powered-down,
the T0CKI input should be at VDD or VSS and the GP3/
MCLR/VPP pin must be at a logic high level if MCLR is
enabled.
9.9.2 WAKE-UP FROM SLEEP
The device can wake-up from Sleep through one of
the following events:
1. An external Reset input on GP3/MCLR/VPP pin,
when configured as MCLR.
2. A Watchdog Timer time-out Reset (if WDT was
enabled).
3. A change on input pin GP0, GP1 or GP3 when
wake-up on change is enabled.
4. A comparator output change has occurred when
wake-up on comparator change is enabled.
These events cause a device Reset. The TO, PD
GPWUF and CWUF bits can be used to determine the
cause of device Reset. The TO bit is cleared if a WDT
time-out occurred (and caused wake-up). The PD bit,
which is set on power-up, is cleared when SLEEP is
invoked. The GPWUF bit indicates a change in state
while in Sleep at pins GP0, GP1 or GP3 (since the last
file or bit operation on GP port). The CWUF bit
indicates a change in the state while in Sleep of the
comparator output.
Caution:
Right before entering Sleep, read the
input pins. When in Sleep, wake-up
occurs when the values at the pins
change from the state they were in at the
last reading. If a wake-up on change
occurs and the pins are not read before
re-entering Sleep, a wake-up will occur
immediately even if no pins change
while in Sleep mode.
Note:
The WDT is cleared when the device
wakes from Sleep, regardless of the
wake-up source.
2004-2014 Microchip Technology Inc.
DS40001239F-page 43
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