PIC18F87J10-I/PT Microchip Technology, PIC18F87J10-I/PT Datasheet - Page 180
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PIC18F87J10-I/PT
Manufacturer Part Number
PIC18F87J10-I/PT
Description
IC PIC MCU FLASH 64KX16 80TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F63J11-IPT.pdf
(36 pages)
3.PIC18F85J10-IPT.pdf
(410 pages)
4.PIC18F85J10-IPT.pdf
(10 pages)
5.PIC18F85J10-IPT.pdf
(10 pages)
6.PIC18F85J10-IPT.pdf
(8 pages)
7.PIC18F66J15-IPT.pdf
(400 pages)
Specifications of PIC18F87J10-I/PT
Program Memory Type
FLASH
Program Memory Size
128KB (64K x 16)
Package / Case
80-TFQFP
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
66
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 15x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
3936 B
Interface Type
SPI/I2C/MSSP/EUSART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
66
Number Of Timers
5
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, DM183022, DV164136, DM183032, DM164120-5
Minimum Operating Temperature
- 40 C
On-chip Adc
15-ch x 10-bit
Package
80TQFP
Device Core
PIC
Family Name
PIC18
Maximum Speed
40 MHz
Operating Supply Voltage
2.5|3.3 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
MA180015 - MODULE PLUG-IN 18F87J10 FOR HPCAC162062 - HEADER INTRFC MPLAB ICD2 64/80PAC164328 - MODULE SKT FOR 80TQFP
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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- PIC16F616T-ISL PDF datasheet
- PIC18F63J11-IPT PDF datasheet #2
- PIC18F85J10-IPT PDF datasheet #3
- PIC18F85J10-IPT PDF datasheet #4
- PIC18F85J10-IPT PDF datasheet #5
- PIC18F85J10-IPT PDF datasheet #6
- PIC18F66J15-IPT PDF datasheet #7
- Current page: 180 of 400
- Download datasheet (7Mb)
PIC18F87J10
17.4.2
The PWM duty cycle is specified by writing to the
CCPR1L register and to the CCP1CON<5:4> bits. Up
to 10-bit resolution is available. The CCPR1L contains
the eight MSbs and the CCP1CON<5:4> contains the
two LSbs. This 10-bit value is represented by
CCPR1L:CCP1CON<5:4>. The PWM duty cycle is
calculated by the equation:
EQUATION 17-2:
CCPR1L and CCP1CON<5:4> can be written to at any
time but the duty cycle value is not copied into
CCPR1H until a match between PR2 and TMR2 occurs
(i.e., the period is complete). In PWM mode, CCPR1H
is a read-only register.
The CCPR1H register and a 2-bit internal latch are
used to double-buffer the PWM duty cycle. This
double-buffering is essential for glitchless PWM opera-
tion. When the CCPR1H and 2-bit latch match TMR2,
concatenated with an internal 2-bit Q clock or two bits
of the TMR2 prescaler, the ECCP1 pin is cleared. The
maximum PWM resolution (bits) for a given PWM
frequency is given by the equation:
EQUATION 17-3:
TABLE 17-4:
DS39663D-page 178
Timer Prescaler (1, 4, 16)
PR2 Value
Maximum Resolution (bits)
PWM Duty Cycle = (CCPR1L:CCP1CON<5:4>) •
PWM Resolution (max) =
PWM Frequency
PWM DUTY CYCLE
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 40 MHz
T
OSC
• (TMR2 Prescale Value)
log
(
log(2)
2.44 kHz
F
F
PWM
FFh
OSC
16
10
)
bits
9.77 kHz
Preliminary
FFh
10
4
39.06 kHz
17.4.3
The P1M1:P1M0 bits in the CCP1CON register allow
one of four configurations:
• Single Output
• Half-Bridge Output
• Full-Bridge Output, Forward mode
• Full-Bridge Output, Reverse mode
The Single Output mode is the standard PWM mode
discussed in Section 17.4 “Enhanced PWM Mode”.
The Half-Bridge and Full-Bridge Output modes are
covered in detail in the sections that follow.
The general relationship of the outputs in all
configurations is summarized in Figure 17-2.
Note:
FFh
10
1
If the PWM duty cycle value is longer than
the PWM period, the ECCP1 pin will not
be cleared.
PWM OUTPUT CONFIGURATIONS
156.25 kHz
3Fh
1
8
© 2006 Microchip Technology Inc.
312.50 kHz
1Fh
1
7
416.67 kHz
6.58
17h
1
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