PIC18F87J90-I/PT Microchip Technology, PIC18F87J90-I/PT Datasheet - Page 169
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PIC18F87J90-I/PT
Manufacturer Part Number
PIC18F87J90-I/PT
Description
IC PIC MCU FLASH 128KB 80-TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC18F67J90-IPT.pdf
(450 pages)
2.PIC18F67J90-IPT.pdf
(3 pages)
3.PIC18F67J90-IPT.pdf
(10 pages)
4.PIC18F66J90-IPT.pdf
(444 pages)
Specifications of PIC18F87J90-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
48MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, LVD, POR, PWM, WDT
Number Of I /o
67
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
3923 B
Interface Type
AUSART, EUSART, I2C, SPI
Maximum Clock Frequency
48 MHz
Number Of Programmable I/os
67
Number Of Timers
4
Operating Supply Voltage
2.65 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 12 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AC162079 - HEADER MPLAB ICD2 18F85J90 64/80AC164323 - MODULE SKT FOR 100TQFP
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F87J90-I/PT
Manufacturer:
MICROCHIP
Quantity:
4 000
Company:
Part Number:
PIC18F87J90-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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FIGURE 15-5:
When ALRMCFG = 00 and the CHIME bit = 0
(ALRMCFG<6>), the repeat function is disabled and
only a single alarm will occur. The alarm can be
repeated up to 255 times by loading the ALRMRPT
register with FFh.
After each alarm is issued, the ALRMRPT register is
decremented by one. Once the register has reached
‘00’, the alarm will be issued one last time.
After the alarm is issued a last time, the ALRMEN bit is
cleared automatically and the alarm turned off. Indefinite
repetition of the alarm can occur if the CHIME bit = 1.
When CHIME = 1, the alarm is not disabled when the
ALRMRPT register reaches ‘00’, but it rolls over to FF
and continues counting indefinitely.
2010 Microchip Technology Inc.
Note 1:
0000 – Every half second
0001 – Every second
0010 – Every 10 seconds
0011 – Every minute
0100 – Every 10 minutes
0101 – Every hour
0110 – Every day
0111 – Every week
1000 – Every month
1001 – Every year
Alarm Mask Setting
AMASK<3:0>
Annually, except when configured for February 29.
ALARM MASK SETTINGS
(1)
Day of the
Week
d
Month
m
m
PIC18F87J90 FAMILY
15.3.2
At every alarm event, an interrupt is generated. Addi-
tionally, an alarm pulse output is provided that operates
at half the frequency of the alarm.
The alarm pulse output is completely synchronous with
the RTCC clock and can be used as a trigger clock to
other peripherals. This output is available on the RTCC
pin. The output pulse is a clock with a 50% duty cycle
and a frequency, half that of the alarm event (see
Figure 15-6).
The RTCC pin also can output the seconds clock. The
user can select between the alarm pulse, generated by
the RTCC module, or the seconds clock output.
The RTSECSEL<1:0> (PADCFG1<2:1>) bits select
between these two outputs:
• Alarm Pulse – RTSECSEL<1:0> = 00
• Seconds Clock – RTSECSEL<1:0> = 01
d
d
Day
d
d
ALARM INTERRUPT
Hours
h
h
h
h
h
h
h
h
Minutes
m
m
m
m
m
m
m
m
m
m
m
DS39933D-page 169
Seconds
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
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