PIC16C716/JW Microchip Technology, PIC16C716/JW Datasheet - Page 59
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PIC16C716/JW
Manufacturer Part Number
PIC16C716/JW
Description
IC MCU EPROM2KX14 A/D PWM 18CDIP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16C716/JW
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
13
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
EPROM, UV
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 4x8b
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
18-CDIP (0.300", 7.62mm) Window
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Other names
PIC16C716/JWR
PIC16C716/JWR
Q811661
PIC16C716/JWR
Q811661
FIGURE 9-8:
FIGURE 9-9:
© 2005 Microchip Technology Inc.
Note 1: This brown-out circuit is less expensive,
Note 1: This circuit will activate Reset when
V
V
DD
2: Internal Brown-out Reset should be
3: Resistors should be adjusted for the
DD
2: Internal Brown-out Reset circuitry
33k
albeit less accurate. Transistor Q1 turns
off when V
such that:
disabled when using this circuit.
characteristics of the transistor.
R1
R2
V
Vz = Zener voltage.
should be disabled when using this
circuit.
DD
goes below (Vz + 0.7V) where
V
DD
10k
x
DD
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 1
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 2
is below a certain level
R1 + R2
R1
Q1
40k
Q1
40k
PIC16C7XX
= 0.7V
PIC16C7XX
V
MCLR
V
MCLR
DD
DD
FIGURE 9-10:
9.8
On power-up the time-out sequence is as follows: First
PWRT time-out is invoked after the POR time delay has
expired. Then OST is activated. The total time-out will
vary based on oscillator configuration and the status of
the PWRT. For example, in RC mode with the PWRT
disabled, there will be no time-out at all. Figure 9-11,
Figure 9-12,
sequences on power-up.
Since the time-outs occur from the POR pulse, if MCLR
is kept low long enough, the time-outs will expire. Then
bringing MCLR high will begin execution immediately
(Figure 9-13). This is useful for testing purposes or to
synchronize more than one PIC16CXXX device
operating in parallel.
Table 9-5 shows the Reset conditions for some Special
Function Registers, while Table 9-6 shows the Reset
conditions for all the registers.
This
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
Vss
Time-out Sequence
MCP809
RST
brown-out
PIC16C712/716
and
V
V
DD
DD
capacitor
bypass
Figure 9-13
protection
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 3
V
MCLR
PIC16C7XX
circuit
DD
DS41106B-page 57
depict
employs
time-out