PIC16C712-20/SO Microchip Technology, PIC16C712-20/SO Datasheet - Page 54

• Manufacturer Part Number: PIC16C712-20/SO
• Description: IC MCU OTP 1KX14 A/D PWM 18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C712-20/SO

• Core Size: 8-Bit
• Program Memory Size: 1.75KB (1K x 14)
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Core Processor: PIC
• Speed: 20MHz
• Number Of I /o: 13
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 18-SOIC (7.5mm Width)
• Controller Family/series: PIC16C
• No. Of I/o's: 13
• Ram Memory Size: 128Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC16C712/716
9.2.3
For timing insensitive applications, the “RC” device
option offers additional cost savings. The RC oscillator
frequency is a function of the supply voltage, the resis-
tor (R
ing temperature. In addition to this, the oscillator
frequency will vary from unit to unit due to normal pro-
cess parameter variation. Furthermore, the difference
in lead frame capacitance between package types will
also affect the oscillation frequency, especially for low
C
variation due to tolerance of external R and C compo-
nents used. Figure 9-4 shows how the R/C combina-
tion is connected to the PIC16CXXX.
FIGURE 9-4:
DS41106A-page 54
EXT
Cext
V
Recommended values:
Rext
SS
EXT
values. The user also needs to take into account
V
DD
RC OSCILLATOR
) and capacitor (C
Fosc/4
RC OSCILLATOR MODE
OSC1
OSC2/CLKOUT
3 k
Cext > 20pF
EXT
) values and the operat-
Rext
100 k
PIC16C7XX
Internal
clock
Preliminary
9.3
The PIC16CXXX 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)
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 (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 situations as indi-
cated in Table 9-4. These bits are used in software to
determine the nature of the reset. See Table 9-6 for a
full description of reset states of all registers.
A simplified block diagram of the on-chip reset circuit is
shown in Figure 9-6.
The PICmicro microcontrollers have a MCLR noise fil-
ter 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.
Reset
1999 Microchip Technology Inc.