PIC16C771/SS Microchip Technology, PIC16C771/SS Datasheet - Page 51
![IC MCU OTP 4KX14 A/D PWM 20SSOP](/photos/6/58/65895/150-20-ssop_sml.jpg)
PIC16C771/SS
Manufacturer Part Number
PIC16C771/SS
Description
IC MCU OTP 4KX14 A/D PWM 20SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Datasheets
1.PIC16C770-ISO.pdf
(220 pages)
2.PIC16C770-ISO.pdf
(6 pages)
3.PIC16C770-ISO.pdf
(8 pages)
Specifications of PIC16C771/SS
Core Size
8-Bit
Program Memory Size
7KB (4K x 14)
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Core Processor
PIC
Speed
20MHz
Connectivity
I²C, SPI
Number Of I /o
15
Program Memory Type
OTP
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 6x12b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
20-SSOP
Controller Family/series
PIC16C
No. Of I/o's
16
Ram Memory Size
256Byte
Cpu Speed
20MHz
No. Of Timers
3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT20SS1-1 - SOCKET TRANSITION 20DIP 20SSOP309-1014 - ADAPTER 20-SSOP TO 20-DIP
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
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6.2
A crystal oscillator circuit is built in between pins T1OSI
(input) and T1OSO (amplifier output). It is enabled by
setting control bit T1OSCEN (T1CON<3>). The oscilla-
tor is a low power oscillator rated up to 200 kHz. It will
continue to run during SLEEP. It is primarily intended
for a 32 kHz crystal. Table 6-1 shows the capacitor
selection for the Timer1 oscillator.
The Timer1 oscillator is identical to the LP oscillator.
The user must provide a software time delay to ensure
proper oscillator start-up.
TABLE 6-1:
TABLE 6-2:
Note 1: Higher capacitance increases the stability
Address
0Bh,8Bh,
10Bh,18Bh
0Ch
8Ch
0Eh
0Fh
10h
Legend:
Osc Type
2002 Microchip Technology Inc.
These values are for design guidance only.
LP
2: Since each resonator/crystal has its own
Timer1 Oscillator
x = unknown, u = unchanged, - = unimplemented read as ’0’. Shaded cells are not used by the Timer1 module.
of oscillator but also increases the start-up
time.
characteristics, the user should consult the
resonator/crystal manufacturer for appro-
priate values of external components.
Name
INTCON
PIR1
PIE1
TMR1L
TMR1H
T1CON
100 kHz
200 kHz
32 kHz
Freq
CAPACITOR SELECTION FOR
THE TIMER1 OSCILLATOR
REGISTERS ASSOCIATED WITH TIMER1 AS A TIMER/COUNTER
Holding register for the Least Significant Byte of the 16-bit TMR1 register
Holding register for the Most Significant Byte of the 16-bit TMR1 register
Bit 7
GIE
—
—
—
33 pF
15 pF
15 pF
PEIE
ADIF
ADIE
Bit 6
C1
—
T1CKPS1
Bit 5
T0IE
—
—
33 pF
15 pF
15 pF
C2
T1CKPS0
Bit 4
INTE
—
—
T1OSCEN
SSPIF
SSPIE
RBIE
Bit 3
6.3
The TMR1 Register pair (TMR1H:TMR1L) increments
from 0000h to FFFFh and rolls over to 0000h. The
TMR1 Interrupt, if enabled, is generated on overflow
which is latched in interrupt flag bit TMR1IF (PIR1<0>).
This interrupt can be enabled/disabled by setting/clear-
ing TMR1 interrupt enable bit TMR1IE (PIE1<0>).
6.4
If the ECCP module is configured in Compare mode to
generate a “special event trigger" (CCP1M<3:0> =
1011), this signal will reset Timer1 and start an A/D
conversion (if the A/D module is enabled).
Timer1 must be configured for either timer or Synchro-
nized Counter mode to take advantage of this feature.
If Timer1 is running in Asynchronous Counter mode,
this RESET operation may not work.
In the event that a write to Timer1 coincides with a spe-
cial event trigger from ECCP, the write will take prece-
dence.
In this mode of operation, the CCPR1H:CCPR1L regis-
ters pair effectively becomes the period register for
Timer1.
Note:
PIC16C717/770/771
T1SYNC
CCP1IF
CCP1IE
Bit 2
T0IF
Timer1 Interrupt
Resetting Timer1 using a CCP
Trigger Output
The special event triggers from the CCP1
module will not set interrupt flag bit
TMR1IF (PIR1<0>).
TMR1CS
TMR2IF
TMR2IE
INTF
Bit 1
TMR1ON
TMR1IF
TMR1IE
RBIF
Bit 0
0000 000x 0000 000u
-0-- 0000 -0-- 0000
-0-- 0000 -0-- 0000
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
--00 0000 --uu uuuu
DS41120B-page 49
Value on:
POR,
BOR
Value on
RESETS
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