PIC16F76-I/SS Microchip Technology Inc., PIC16F76-I/SS Datasheet - Page 95

• Manufacturer Part Number: PIC16F76-I/SS
• Description: 28 PIN, 14 KB FLASH, 368 RAM, 22 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F76-I/SS

• A/d Inputs: 5-Channel, 8-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 22
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SSOP
• Programmable Memory: 14K Bytes
• Ram Size: 368 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

12.3
The PIC16F7X differentiates between various kinds of
RESET:
• Power-on Reset (POR)
• MCLR Reset during normal operation
• MCLR Reset during SLEEP
• WDT Reset (during normal operation)
• WDT Wake-up (during SLEEP)
• Brown-out Reset (BOR)
FIGURE 12-4:
 2002 Microchip Technology Inc.
MCLR
OSC1
V
Note 1:
DD
RESET
RC OSC
On-chip
This is a separate oscillator from the RC oscillator of the CLKIN pin.
OST/PWRT
Brown-out
V
(1)
Module
Detect
DD
WDT
Reset
Rise
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
OST
PWRT
10-bit Ripple Counter
Time-out
Reset
WDT
10-bit Ripple Counter
BODEN
Power-on Reset
External
RESET
SLEEP
Some registers are not affected in any RESET condi-
tion. 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 (POR), on the
MCLR and WDT Reset, on MCLR Reset during
SLEEP, and Brown-out Reset (BOR). They are not
affected by a WDT Wake-up, which is viewed as the
resumption of normal operation. The TO and PD bits
are set or cleared differently in different RESET situa-
tions, as indicated in Table 12-4. These bits are used in
software to determine the nature of the RESET. See
Table 12-6 for a full description of RESET states of all
registers.
A simplified block diagram of the on-chip RESET circuit
is shown in Figure 12-4.
S
R
PIC16F7X
DS30325B-page 93
Q
Chip_Reset
Enable PWRT
Enable OST