PIC18F45K22-E/P Microchip Technology, PIC18F45K22-E/P Datasheet - Page 195
![no-image](/images/manufacturer_photos/0/4/439/microchip_technology_sml.jpg)
PIC18F45K22-E/P
Manufacturer Part Number
PIC18F45K22-E/P
Description
32KB, Flash, 1536bytes-RAM,8-bit Family 40 PDIP .600in TUBE
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheets
1.PIC16F722-ISS.pdf
(8 pages)
2.PIC18F26J13-ISS.pdf
(496 pages)
3.PIC18F25K22T-ISS.pdf
(10 pages)
Specifications of PIC18F45K22-E/P
Core Processor
PIC
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
35
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 30x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F45K22-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- Current page: 195 of 496
- Download datasheet (5Mb)
FIGURE 14-13:
14.4.3
The PWM mode supports an Auto-Shutdown mode that
will disable the PWM outputs when an external
shutdown event occurs. Auto-Shutdown mode places
the PWM output pins into a predetermined state. This
mode is used to help prevent the PWM from damaging
the application.
The auto-shutdown sources are selected using the
CCPxAS<2:0> bits of the ECCPxAS register. A
shutdown event may be generated by:
• A logic ‘0’ on the INT pin
• Comparator Cx
• Setting the CCPxASE bit in firmware
A shutdown condition is indicated by the CCPxASE
(Auto-Shutdown Event Status) bit of the ECCPxAS
register. If the bit is a ‘0’, the PWM pins are operating
normally. If the bit is a ‘1’, the PWM outputs are in the
shutdown state.
When a shutdown event occurs, two things happen:
The CCPxASE bit is set to ‘1’. The CCPxASE will
remain set until cleared in firmware or an auto-restart
occurs (see
The enabled PWM pins are asynchronously placed in
their shutdown states. The PWM output pins are
grouped into pairs [PxA/PxC] and [PxB/PxD]. The state
2010 Microchip Technology Inc.
Shoot-Through Current
Note 1: All signals are shown as active-high.
External Switch C
External Switch D
2: T
3: T
ENHANCED PWM AUTO-
SHUTDOWN MODE
Section 14.4.4 “Auto-Restart
ON
OFF
Potential
is the turn-on delay of power switch QC and its driver.
is the turn-off delay of power switch QD and its driver.
PxA
PxB
PxC
PxD
EXAMPLE OF PWM DIRECTION CHANGE AT NEAR 100% DUTY CYCLE
Mode”).
Forward Period
PW
Preliminary
of each pin pair is determined by the PSSxAC<1:0> and
PSSxBD<1:0> bits of the ECCPxAS register. Each pin
pair may be placed into one of three states:
• Drive logic ‘1’
• Drive logic ‘0’
• Tri-state (high-impedance)
Note 1: The auto-shutdown condition is a level-
PIC18(L)F2X/4XK22
t1
2: Writing to the CCPxASE bit is disabled
3: Once the auto-shutdown condition has
based signal, not an edge-based signal.
As long as the level is present, the auto-
shutdown will persist.
while
persists.
been removed and the PWM restarted
(either through firmware or auto-restart),
the PWM signal will always restart at the
beginning of the next PWM period.
T
ON
Reverse Period
T
T = T
OFF
an
OFF
PW
– T
auto-shutdown
ON
DS41412D-page 195
condition
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