PIC16C712-04/P Microchip Technology, PIC16C712-04/P Datasheet - Page 57
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PIC16C712-04/P
Manufacturer Part Number
PIC16C712-04/P
Description
IC MCU OTP 1KX14 A/D PWM 18DIP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Datasheets
1.PIC16C716-04P.pdf
(106 pages)
2.PIC16C716-04P.pdf
(14 pages)
3.PIC16C712-04P.pdf
(109 pages)
Specifications of PIC16C712-04/P
Core Size
8-Bit
Program Memory Size
1.75KB (1K x 14)
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Core Processor
PIC
Speed
4MHz
Number Of I /o
13
Program Memory Type
OTP
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-DIP (0.300", 7.62mm)
Controller Family/series
PIC16C
No. Of I/o's
13
Ram Memory Size
128Byte
Cpu Speed
4MHz
No. Of Timers
3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC16C712-04/P
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
FIGURE 9-8:
FIGURE 9-9:
1999 Microchip Technology Inc.
Note 1: This brown-out circuit is less expensive,
Note 1: This circuit will activate reset when V
V
V
DD
DD
2: Internal brown-out reset should be dis-
3: Resistors should be adjusted for the
2: Internal Brown-out Reset circuitry
33k
albeit less accurate. Transistor Q1 turns
off when V
such that:
abled when using this circuit.
characteristics of the transistor.
R1
R2
goes below (Vz + 0.7V) where
Vz = Zener voltage.
should be disabled when using this cir-
cuit.
V
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 1
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 2
DD
10k
x
DD
R1 + R2
is below a certain level
R1
Q1
40k
40k
Q1
= 0.7 V
PIC16C7XX
PIC16C7XX
V
MCLR
V
MCLR
DD
DD
DD
Preliminary
FIGURE 9-10: EXTERNAL BROWN-OUT
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 operat-
ing in parallel.
Table 9-5 shows the reset conditions for some special
function registers, while Table 9-6 shows the reset con-
ditions for all the registers.
9.9
The Power Control/Status Register, PCON has two
bits.
Bit0 is Brown-out Reset Status bit, BOR. If the BODEN
configuration bit is set, BOR is ’1’ on Power-on Reset.
If the BODEN configuration bit is clear, BOR is
unknown on Power-on Reset.
The BOR status bit is a "don't care" and is not neces-
sarily predictable if the brown-out circuit is disabled (the
BODEN configuration bit is clear). BOR must then be
set by the user and checked on subsequent resets to
see if it is clear, indicating a brown-out has occurred.
Bit1 is POR (Power-on Reset Status bit). It is cleared on
a Power-on Reset and unaffected otherwise. The user
must set this bit following a Power-on Reset.
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
Power Control/Status Register
(PCON)
MCP809
RST
brown-out
PIC16C712/716
and
V
V
DD
DD
PROTECTION CIRCUIT 3
capacitor
bypass
Figure 9-13
protection
V
MCLR
PIC16C7XX
circuit
DD
DS41106A-page 57
depict
employs
time-out