PIC16F506-I/SL Microchip Technology, PIC16F506-I/SL Datasheet - Page 65

• Manufacturer Part Number: PIC16F506-I/SL
• Description: IC PIC MCU FLASH 1KX14 14SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F506-I/SL

• Program Memory Type: FLASH
• Program Memory Size: 1.5KB (1K x 12)
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 11
• Ram Size: 67 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 67 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 1
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 3-ch x 8-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

10.3.1
This Configuration bit, when unprogrammed (left in the
‘1’ state), enables the external MCLR function. When
programmed, the MCLR function is tied to the internal
V
Figure 10-6.
FIGURE 10-6:
10.4
The PIC12F510/16F506 devices incorporate an on-
chip Power-on Reset (POR) circuitry, which provides
an internal chip Reset for most power-up situations.
The on-chip POR circuit holds the chip in Reset until
V
ation. The POR is active regardless of the state of the
MCLR enable bit. An internal weak pull-up resistor is
implemented using a transistor (refer to Table 13-3 for
the pull-up resistor ranges). This will eliminate external
RC components usually needed to create an external
Power-on Reset. A maximum rise time for V
ified. See Section 13.0 “Electrical Characteristics”
for details.
When the devices start normal operation (exit the
Reset condition), device operating parameters (volt-
age, frequency, temperature,...) must be met to ensure
operation. If these conditions are not met, the devices
must be held in Reset until the operating parameters
are met.
© 2007 Microchip Technology Inc.
MCLRE
DD
DD
GPWU/RBWU
and the pin is assigned to be a I/O. See
has reached a high enough level for proper oper-
Power-on Reset (POR)
MCLR ENABLE
MCLR SELECT
(GP3/RB3)/MCLR/V
Internal MCLR
DD
is spec-
PP
A simplified block diagram of the on-chip Power-on
Reset circuit is shown in Figure 10-7.
The Power-on Reset circuit and the Device Reset
Timer (see Section 10.5 “Device Reset Timer
(DRT)”) circuit are closely related. On power-up, the
Reset latch is set and the DRT is reset. The DRT timer
begins counting once it detects MCLR, internal or
external, to be high. After the time-out period, it will
reset the Reset latch and thus end the on-chip Reset
signal.
A power-up example where MCLR is held low is shown
in Figure 10-8. V
before bringing MCLR high. The chip will actually come
out of Reset T
In Figure 10-9, the on-chip Power-on Reset feature is
being used (MCLR and V
is programmed to be (GP3/RB3). The V
before the Start-up timer times out and there is no prob-
lem in getting a proper Reset. However, Figure 10-10
depicts a problem situation where V
The time between when the DRT senses that MCLR is
high and when MCLR and V
value, is too long. In this situation, when the start-up
timer times out, V
value and the chip may not function correctly. For such
situations, we recommend that external RC circuits be
used to achieve longer POR delay times (Figure 10-9).
For additional information, refer to Application Notes
AN522, “Power-Up Considerations” (DS00522) and
AN607, “Power-up Trouble Shooting” (DS00607).
Note:
PIC12F510/16F506
When the devices start normal operation
(exit the Reset condition), device operat-
ing
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.
DRT
parameters
DD
msec after MCLR goes high.
DD
is allowed to rise and stabilize
has not reached the V
DD
are tied together or the pin
DD
actually reach their full
(voltage,
DD
DS41268D-page 63
rises too slowly.
DD
frequency,
is stable
DD
(min)