PIC18C452-E/PT Microchip Technology, PIC18C452-E/PT Datasheet - Page 107
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PIC18C452-E/PT
Manufacturer Part Number
PIC18C452-E/PT
Description
IC MCU OTP 16KX16 A/D 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Cr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16C770-ISO.pdf
(8 pages)
3.PIC18C242-ISO.pdf
(305 pages)
4.PIC18C242-ISO.pdf
(12 pages)
Specifications of PIC18C452-E/PT
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
33
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 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
PIC18C452E/PT
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18C452-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PIC16C770-ISO PDF datasheet #2
- PIC18C242-ISO PDF datasheet #3
- PIC18C242-ISO PDF datasheet #4
- Current page: 107 of 305
- Download datasheet (6Mb)
12.2
The Timer1 oscillator may be used as the clock source
for Timer3. The Timer1 oscillator is enabled by setting
the T1OSCEN (T1CON<3>) bit. The oscillator is a low
power oscillator rated up to 200 KHz. See Section 10.0
for further details.
12.3
The TMR3 Register pair (TMR3H:TMR3L) increments
from 0000h to FFFFh and rolls over to 0000h. The
TMR3 interrupt, if enabled, is generated on overflow
which is latched in interrupt flag bit TMR3IF (PIR2<1>).
This interrupt can be enabled/disabled by setting/clear-
ing TMR3 interrupt enable bit, TMR3IE (PIE2<1>).
TABLE 12-1:
INTCON
PIR2
PIE2
IPR2
TMR3L
TMR3H
T1CON
T3CON
Legend:
Name
2001 Microchip Technology Inc.
Timer1 Oscillator
Timer3 Interrupt
x = unknown, u = unchanged, - = unimplemented, read as '0'. Shaded cells are not used by the Timer1 module.
Holding Register for the Least Significant Byte of the 16-bit TMR3 Register
Holding Register for the Most Significant Byte of the 16-bit TMR3 Register
RD16
RD16
GIEH
Bit 7
GIE/
—
—
—
REGISTERS ASSOCIATED WITH TIMER3 AS A TIMER/COUNTER
T3CCP2
PEIE/
GIEL
Bit 6
—
—
—
—
T1CKPS1 T1CKPS0 T1OSCEN T1SYNC
T3CKPS1 T3CKPS0
TMR0IE
Bit 5
—
—
—
INT0IE
Bit 4
—
—
—
T3CCP1
BCLIF
BCLIE
BCLIP
RBIE
Bit 3
T3SYNC
TMR0IF
12.4
If the CCP module is configured in Compare mode to
generate a “special event trigger” (CCP1M3:CCP1M0
= 1011), this signal will reset Timer3.
Timer3 must be configured for either Timer or Synchro-
nized Counter mode to take advantage of this feature.
If Timer3 is running in Asynchronous Counter mode,
this RESET operation may not work. In the event that a
write to Timer3 coincides with a special event trigger
from CCP1, the write will take precedence. In this mode
of operation, the CCPR1H:CCPR1L registers pair
effectively becomes the period register for Timer3.
LVDIE
LVDIP
LVDIF
Bit 2
Note:
Resetting Timer3 Using a CCP
Trigger Output
TMR1CS TMR1ON --00 0000 --uu uuuu
TMR3CS TMR3ON -000 0000 -uuu uuuu
TMR3IF
TMR3IE
TMR3IP
INT0IF
The special event triggers from the CCP
module will not set interrupt flag bit
TMR3IF (PIR1<0>).
Bit 1
CCP2IE
CCP2IP
CCP2IF
RBIF
Bit 0
PIC18CXX2
0000 000x 0000 000u
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
xxxx xxxx uuuu uuuu
xxxx xxxx uuuu uuuu
Value on
POR,
BOR
DS39206C-page 105
Value on
all other
RESETS
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