PIC18F1230-I/SS Microchip Technology, PIC18F1230-I/SS Datasheet - Page 126

• Manufacturer Part Number: PIC18F1230-I/SS
• Description: Microcontroller
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F1230-I/SS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SSOP
• Package: 20SSOP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 16
• Interface Type: USART
• On-chip Adc: 4-chx10-bit
• Number Of Timers: 2
• Processor Series: PIC18F
• Core: PIC
• Data Ram Size: 256 B
• Maximum Clock Frequency: 40 MHz
• 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, DV164136
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164307 - MODULE SKT FOR PM3 28SSOP
• Lead Free Status / Rohs Status: Details

PIC18F1230/1330
FIGURE 14-5:
14.4.2
When the PWM time base is in the Single-Shot mode
(PTMOD<1:0> = 01), an interrupt event is generated
when a match with the PTPER register occurs. The
PWM Time Base register (PTMR) is reset to zero on
the following input clock edge and the PTEN bit is
cleared. The postscaler selection bits have no effect in
this Timer mode.
DS39758D-page 126
Note 1: PWM Time Base Period register, PTPER, is loaded with the value FFFh for this example.
PTMR_INT_REQ
PTMR_INT_REQ
A: PRESCALER = 1:1
B: PRESCALER = 1:4
PTIF bit
PTIF bit
F
PTMR
PTMR
OSC
INTERRUPTS IN SINGLE-SHOT
MODE
/4
Q1
Qc
Q2
Qc
PWM TIME BASE INTERRUPT TIMING, FREE-RUNNING MODE
FFEh
FFEh
Q3
Qc
Q4
Qc
Q1
Qc
1
1
Q2
Qc
FFFh
FFFh
Q3
Qc
Q4
Qc
Q1
Qc
Q4
Q2
Qc
000h
Q4
000h
14.4.3
In
(PTMOD<1:0> = 10), an interrupt event is generated
each time the value of the PTMR register becomes
zero and the PWM time base begins to count upwards.
The postscaler selection bits may be used in this Timer
mode to reduce the frequency of the interrupt events.
Figure 14-7 shows the interrupts in Continuous Up/
Down Count mode.
Q3
Qc
the
Q4
Qc
INTERRUPTS IN CONTINUOUS
UP/DOWN COUNT MODE
Continuous
Q1
Qc
Q2
Qc
001h
001h
Q3
Qc
 2009 Microchip Technology Inc.
Up/Down
Q4
Qc
Q1
Qc
Q2
Qc
Count
002h
002h
Q3
Qc
Q4
Qc
mode