PIC16F916T-I/SS Microchip Technology, PIC16F916T-I/SS Datasheet - Page 224

• Manufacturer Part Number: PIC16F916T-I/SS
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SSOP,28PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F916T-I/SS

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 352 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MA160011 - DAUGHTER BOARD PICDEM LCD 16F91X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC16F913/914/916/917/946
16.2.1
The on-chip POR circuit holds the chip in Reset until V
has reached a high enough level for proper operation. To
take advantage of the POR, simply connect the MCLR
pin through a resistor to V
RC components usually needed to create Power-on
Reset. A maximum rise time for V
Section 19.0 “Electrical Specifications” for details. If
the BOR is enabled, the maximum rise time specification
does not apply. The BOR circuitry will keep the device in
Reset until V
“Brown-Out Reset (BOR)”).
When the device starts normal operation (exits the
Reset condition), device operating parameters (i.e.,
voltage, frequency, temperature, etc.) must be met to
ensure operation. If these conditions are not met, the
device must be held in Reset until the operating
conditions are met.
For additional information, refer to Application Note
AN607, “Power-up Trouble Shooting” (DS00607).
16.2.2
PIC16F91X/946 has a noise filter in the MCLR Reset
path. The filter will detect and ignore small pulses.
It should be noted that a WDT Reset does not drive
MCLR pin low.
Voltages applied to the pin that exceed its specification
can result in both MCLR Resets and excessive current
beyond the device specification during the ESD event.
For this reason, Microchip recommends that the MCLR
pin no longer be tied directly to V
network, as shown in Figure 16-2, is suggested.
An internal MCLR option is enabled by clearing the
MCLRE bit in the Configuration Word register. When
MCLRE = 0, the Reset signal to the chip is generated
internally. When the MCLRE = 1, the RE3/MCLR pin
becomes an external Reset input. In this mode, the
RE3/MCLR pin has a weak pull-up to V
Serial Programming is not affected by selecting the
internal MCLR option.
DS41250F-page 222
Note:
POWER-ON RESET (POR)
The POR circuit does not produce an
internal Reset when V
re-enable the POR, V
for a minimum of 100 μs.
MCLR
DD
reaches V
DD
. This will eliminate external
BOR
DD
(see Section 16.2.4
DD
DD
. The use of an RC
DD
must reach Vss
is required. See
declines. To
DD
. In-Circuit
DD
FIGURE 16-2:
16.2.3
The Power-up Timer provides a fixed 64 ms (nominal)
time-out on power-up only, from POR or Brown-out
Reset. The Power-up Timer operates from the 31 kHz
LFINTOSC oscillator. For more information, see
Section 4.5 “Internal Clock Modes”. The chip is kept
in Reset as long as PWRT is active. The PWRT delay
allows the V
uration bit, PWRTE, can disable (if set) or enable (if
cleared or programmed) the Power-up Timer. The
Power-up Timer should be enabled when Brown-out
Reset is enabled, although it is not required.
The Power-up Timer delay will vary from chip-to-chip
and vary due to:
• V
• Temperature variation
• Process variation
See
“Electrical Specifications”).
DD
DC
variation
V
DD
R1
1 kΩ (or greater)
POWER-UP TIMER (PWRT)
C1
0.1 μF
(optional, not critical)
DD
parameters
to rise to an acceptable level. A Config-
RECOMMENDED
CIRCUIT
© 2007 Microchip Technology Inc.
for
details
MCLR
PIC
®
(Section 19.0
MCU
MCLR