PIC16F716-I/P Microchip Technology Inc., PIC16F716-I/P Datasheet - Page 63

• Manufacturer Part Number: PIC16F716-I/P
• Description: 18 PIN, 3.5 KB FLASH, 128 RAM, 13 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F716-I/P

• A/d Inputs: 4-Channel, 8-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 13
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 18-pin PDIP
• Programmable Memory: 3.5K Bytes
• Ram Size: 128 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

FIGURE 9-7:
FIGURE 9-8:
 2003 Microchip Technology Inc.
Note 1: This brown-out circuit is less expensive, albeit
Note 1: This circuit will activate Reset when V
V
V
DD
2: Internal Brown-out Reset should be disabled
3: Resistors should be adjusted for the
DD
2: Internal Brown-out Reset circuitry should be
R1
R2
33k
less accurate. Transistor Q1 turns off when V
is below a certain level such that:
when using this circuit.
characteristics of the transistor.
below (Vz + 0.7V) where Vz = Zener voltage.
disabled when using this circuit.
V
DD
x
10k
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 1
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 2
R1 + R2
R1
Q1
40k
40k
Q1
= 0.7 V
PIC16F716
PIC16F716
V
MCLR
MCLR
V
DD
DD
DD
goes
DD
Preliminary
FIGURE 9-9:
Note 1:
Vss
MCP809
RST
This brown-out protection circuit employs
Microchip Technology’s MCP809
microcontroller supervisor. The MCP8XX and
MCP1XX families of supervisors provide
push-pull and open collector outputs with
both high and low active Reset pins. There
are 7 different trip point selections to
accommodate 5V and 3V systems.
V
V
DD
DD
capacitor
bypass
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 3
PIC16F716
V
MCLR
PIC16F716
DD
DS41206A-page 61