PIC16F636-E/ST Microchip Technology, PIC16F636-E/ST Datasheet - Page 89

• Manufacturer Part Number: PIC16F636-E/ST
• Description: IC MCU FLASH 2KX14 14TSSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F636-E/ST

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, LVD, POR, WDT
• Number Of I /o: 11
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 14-TSSOP
• For Use With: AC162057 - MPLAB ICD 2 HEADER 14DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

8.0
The Programmable Low-Voltage Detect (PLVD)
module is a power supply detector which monitors the
internal power supply. This module is typically used in
key fobs and other devices, where certain actions
need to be taken as a result of a falling battery voltage.
FIGURE 8-1:
FIGURE 8-2:
© 2007 Microchip Technology Inc.
LVDEN
V
DD
PROGRAMMABLE
LOW-VOLTAGE DETECT
(PLVD) MODULE
LVDIF
PLVD BLOCK DIAGRAM
PLVD OPERATION
V
DD
PLVD Trip Point
Set by
Hardware
8 Stages
Reference
Generator
Voltage
PIC12F635/PIC16F636/639
The PLVD module includes the following capabilities:
• Eight programmable trip points
• Interrupt on falling V
• Stable reference indication
• Operation during Sleep
A Block diagram of the PLVD module is shown in
Figure 8-1.
Analog MUX
LVDL<2:0>
8-to-1
0
1
2
6
7
Cleared by
Software
-
+
DD
det
DS41232D-page 87
LVDIF