PIC16F676-I/ST Microchip Technology Inc., PIC16F676-I/ST Datasheet - Page 59
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PIC16F676-I/ST
Manufacturer Part Number
PIC16F676-I/ST
Description
14 PIN, 1.75 KB FLASH, 64 RAM, 12 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F676-IST.pdf
(132 pages)
Specifications of PIC16F676-I/ST
Comparators
1
Cpu Speed
5 MIPS
Eeprom Memory
128 Bytes
Input Output
12
Memory Type
Flash
Number Of Bits
8
Package Type
14-pin TSSO
Programmable Memory
1.75K Bytes
Ram Size
64 Bytes
Speed
20 MHz
Timers
1-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F676-I/ST
Manufacturer:
MICROCHIP
Quantity:
3 400
Part Number:
PIC16F676-I/ST
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
9.3
The PIC16F630/676 differentiates between various
kinds of RESET:
a)
b)
c)
d)
e)
f)
Some registers are not affected in any RESET
condition; their status is unknown on POR and
unchanged in any other RESET. Most other registers
are reset to a “RESET state” on:
• Power-on Reset
• MCLR Reset
• WDT Reset
• WDT Reset during SLEEP
• Brown-out Detect (BOD)
FIGURE 9-4:
2003 Microchip Technology Inc.
V
OSC1/
MCLR/
CLKIN
Note
PP
V
pin
Power-on Reset (POR)
WDT Reset during normal operation
WDT Reset during SLEEP
MCLR Reset during normal operation
MCLR Reset during SLEEP
Brown-out Detect (BOD)
DD
pin
RESET
1:
On-chip
RC OSC
OST/PWRT
This is a separate oscillator from the INTOSC/EC oscillator.
Brown-out
V
Module
Detect
DD
WDT
Detect
(1)
Rise
OST
PWRT
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
10-bit Ripple Counter
10-bit Ripple Counter
Time-out
Reset
WDT
BODEN
Power-on Reset
External
Reset
SLEEP
Enable PWRT
Enable OST
They are not affected by a WDT wake-up, since this is
viewed as the resumption of normal operation. TO and
PD bits are set or cleared differently in different RESET
situations as indicated in Table 9-4. These bits are
used in software to determine the nature of the RESET.
See Table 9-7 for a full description of RESET states of
all registers.
A simplified block diagram of the On-Chip Reset Circuit
is shown in Figure 9-4.
The MCLR Reset path has a noise filter to detect and
ignore small pulses. See Table 12-4 in Electrical
Specifications Section for pulse width specification.
See Table 9-3 for time-out situations.
PIC16F630/676
S
R
DS40039C-page 57
Q
Q
Chip_Reset