PIC18F2331-E/MM Microchip Technology, PIC18F2331-E/MM Datasheet - Page 177

• Manufacturer Part Number: PIC18F2331-E/MM
• Description: IC MCU FLASH 4KX16 28QFN
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2331-E/MM

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-QFN
• Core: PIC
• Processor Series: PIC18F
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 40 MHz
• Data Ram Size: 768 B
• Data Rom Size: 256 B
• On-chip Adc: Yes
• Number Of Programmable I/os: 24
• Number Of Timers: 4
• Operating Supply Voltage: 2 V to 5.5 V
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 5
• Height: 0.88 mm
• Interface Type: EUSART, I2C, SPI, SSP
• Length: 6 mm
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Supply Voltage (max): 5.5 V, 5.8 V
• Supply Voltage (min): 3.9 V, 4.2 V
• Width: 6 mm
• For Use With: I3-DB18F4431 - BOARD DAUGHTER ICEPIC3
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Other names: PIC18F2331-E/ML; PIC18F2331-E/ML

FIGURE 18-4:
The PWM time base can be configured for four different
modes of operation:
• Free-Running mode
• Single-Shot mode
• Continuous Up/Down Count mode
• Continuous Up/Down Count mode with interrupts
 2010 Microchip Technology Inc.
for double updates
F
OSC
/4
Comparator
PWM TIME BASE BLOCK DIAGRAM
PTPER Buffer
PTPER
1:1, 1:4, 1:16, 1:64
Zero Match
Period Match
Prescaler
PTMR Register
Comparator
Update Disable (UDIS)
Period Load
PIC18F2331/2431/4331/4431
Period Match
Zero Match
Postscaler
1:1-1:16
Zero Match
Period Match
PTMOD1
PTMOD1
PTMOD0
PTMOD1
PTMOD0
Timer Reset
Up/Down
Interrupt
PTMR Clock
Control
Control
These four modes are selected by the PTMOD<1:0>
bits in the PTCON0 register. The Free-Running mode
produces
Continuous
center-aligned PWM generation. The Single-Shot
mode allows the PWM module to support pulse control
of certain Electronically Commutated Motors (ECMs)
and produces edge-aligned operation.
Direction
Clock
Control
Timer
edge-aligned
PTDIR
PTEN
PTMR Clock
Up/Down
PTIF
Count
PWM
Duty Cycle Load
DS39616D-page 177
modes
generation.
produce
The