PIC18C658/CL Microchip Technology, PIC18C658/CL Datasheet - Page 119
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PIC18C658/CL
Manufacturer Part Number
PIC18C658/CL
Description
IC MCU OTP 16KX16 CAN 68-PLCC
Manufacturer
Microchip Technology
Series
PIC® 18Cr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16C770-ISO.pdf
(8 pages)
3.PIC18C658-IPT.pdf
(366 pages)
4.PIC18C658-IPT.pdf
(16 pages)
5.PIC18C658-IPT.pdf
(16 pages)
6.PIC18C658-IPT.pdf
(16 pages)
Specifications of PIC18C658/CL
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
52
Program Memory Size
32KB (16K x 16)
Program Memory Type
OTP
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
68-PLCC
For Use With
AC164308 - MODULE SKT FOR PM3 68PLCCDVA18PQ640 - DEVICE ADAPT PIC18C658 64-TQFP
Lead Free Status / RoHS Status
Request inventory verification / Request inventory verification
Eeprom Size
-
Other names
Q1068347
- PIC16F616T-ISL PDF datasheet
- PIC16C770-ISO PDF datasheet #2
- PIC18C658-IPT PDF datasheet #3
- PIC18C658-IPT PDF datasheet #4
- PIC18C658-IPT PDF datasheet #5
- PIC18C658-IPT PDF datasheet #6
- Current page: 119 of 366
- Download datasheet (7Mb)
11.2
A crystal oscillator circuit is built-in between pins T1OSI
(input) and T1OSO (amplifier output). It is enabled by
setting control bit T1OSCEN (T1CON register). The
oscillator 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 11-1 shows the
capacitor selection for the Timer1 oscillator.
The user must provide a software time delay to ensure
proper start-up of the Timer1 oscillator.
TABLE 11-1: CAPACITOR SELECTION FOR
11.3
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 (PIR regis-
ters). This interrupt can be enabled/disabled by set-
ting/clearing TMR1 interrupt enable bit TMR1IE (PIE
registers).
2000 Microchip Technology Inc.
32.768 kHz
Note 1: Microchip suggests 33 pF as a starting
Osc Type
LP
2: Higher capacitance increases the stability
3: Since each resonator/crystal has its own
4: Capacitor values are for design guidance
Timer1 Oscillator
Timer1 Interrupt
point in validating the oscillator circuit.
of the oscillator, but also increases the
start-up time.
characteristics, the user should consult the
resonator/crystal manufacturer for appropri-
ate values of external components.
only.
Epson C-001R32.768K-A
THE ALTERNATE OSCILLATOR
Crystal to be Tested:
32 kHz
Freq
TBD
C1
(1)
Advanced Information
± 20 PPM
TBD
C2
(1)
11.4
If the CCP module is configured in Compare mode
to
(CCP1M3:CCP1M0 = 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 CCP1, the write will take prece-
dence.
In this mode of operation, the CCPR1H:CCPR1L regis-
ters pair, effectively becomes the period register for
Timer1.
11.5
Timer1 can be configured for 16-bit reads and writes
(see Figure 11-2). When the RD16 control bit (T1CON
register) is set, the address for TMR1H is mapped to a
buffer register for the high byte of Timer1. A read from
TMR1L will load the contents of the high byte of Timer1
into the Timer1 high byte buffer. This provides the user
with the ability to accurately read all 16 bits of Timer1,
without having to determine whether a read of the high
byte followed by a read of the low byte is valid, due to
a rollover between reads.
A write to the high byte of Timer1 must also take place
through the TMR1H buffer register. Timer1 high byte is
updated with the contents of TMR1H when a write
occurs to TMR1L. This allows a user to write all 16 bits
to both the high and low bytes of Timer1 at once.
The high byte of Timer1 is not directly readable or writ-
able in this mode. All reads and writes must take place
through the Timer1 high byte buffer register. Writes to
TMR1H do not clear the Timer1 prescaler. The
prescaler is only cleared on writes to TMR1L.
Note:
generate
Resetting Timer1 using a CCP Trigger
Output
Timer1 16-Bit Read/Write Mode
The special event triggers from the CCP1
module will not set interrupt flag bit
TMR1IF (PIR registers).
a
PIC18CXX8
“special
DS30475A-page 119
event
trigger"
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