PIC18F1220 MICROCHIP [Microchip Technology], PIC18F1220 Datasheet - Page 171
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PIC18F1220
Manufacturer Part Number
PIC18F1220
Description
18/20/28-Pin High-Performance, Enhanced Flash Microcontrollers with 10-bit A/D and nanoWatt Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F1220.pdf
(310 pages)
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18.2.1
The internal reference voltage of the LVD module may
be used by other internal circuitry (the programmable
Brown-out Reset). If these circuits are disabled (lower
current consumption), the reference voltage circuit
requires a time to become stable before a low-voltage
condition can be reliably detected. This time is invariant
of system clock speed. This start-up time is specified in
electrical specification parameter 36. The low-voltage
interrupt flag will not be enabled until a stable reference
voltage is reached. Refer to the waveform in Figure 18-4.
18.2.2
When the module is enabled, the LVD comparator and
voltage divider are enabled and will consume static cur-
rent. The voltage divider can be tapped from multiple
places in the resistor array. Total current consumption,
when enabled, is specified in electrical specification
parameter D022B.
2004 Microchip Technology Inc.
REFERENCE VOLTAGE SET POINT
CURRENT CONSUMPTION
18.3
When enabled, the LVD circuitry continues to operate
during Sleep. If the device voltage crosses the trip
point, the LVDIF bit will be set and the device will wake-
up from Sleep. Device execution will continue from the
interrupt vector address if interrupts have been globally
enabled.
18.4
A device Reset forces all registers to their Reset state.
This forces the LVD module to be turned off.
Operation During Sleep
Effects of a Reset
PIC18F1220/1320
DS39605C-page 169
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