PIC16F785-E/SS Microchip Technology, PIC16F785-E/SS Datasheet - Page 111

• Manufacturer Part Number: PIC16F785-E/SS
• Description: 20 PIN, 3.5 KB STD FLASH, 128 RAM, 18 I/O PB FREE,
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F785-E/SS

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 17
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20SS1-1 - SOCKET TRANSITION 20DIP 20SSOPAC162060 - HEADER INTRFC MPLAB ICD2 20PIN
• Connectivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

15.2
The PIC16F785/HV785 differentiates between various
kinds of Reset:
• Power-on Reset (POR)
• WDT Reset during normal operation
• WDT Reset during Sleep
• MCLR Reset during normal operation
• MCLR Reset during Sleep
• Brown-out Reset (BOR)
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
• MCLR Reset during Sleep
• WDT Reset
• Brown-out Reset (BOR)
FIGURE 15-1:
© 2008 Microchip Technology Inc.
MCLR/V
Note
CLKI pin
OSC1/
V
DD
Reset
PP
1:
pin
LFINTOSC
Refer to the Configuration Word register (Register 15.2).
OST/PWRT
Brown-out
V
Module
Detect
DD
WDT
Reset
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
Rise
OST
PWRT
(1)
10-bit Ripple Counter
WDT
Time-out
Reset
11-bit Ripple Counter
SBOREN
Power-on Reset
BOREN
External
Reset
Sleep
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 15-2. These bits are
used in software to determine the nature of the Reset.
See Table 15-4 for a full description of Reset states of
all registers.
A simplified block diagram of the On-Chip Reset Circuit
is shown in Figure 15-1.
The MCLR Reset path has a noise filter to detect and
ignore small pulses. See Section 19.0 “Electrical
Specifications” for pulse width specifications.
PIC16F785/HV785
Enable PWRT
Enable OST
S
R
DS41249E-page 109
Q
Chip_Reset