PIC18F87K90-I/PTRSL Microchip Technology, PIC18F87K90-I/PTRSL Datasheet - Page 258

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PIC18F87K90-I/PTRSL

Manufacturer Part Number
PIC18F87K90-I/PTRSL
Description
MCU PIC 128K FLASH XLP 80TQFP
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr

Specifications of PIC18F87K90-I/PTRSL

Core Size
8-Bit
Program Memory Size
128KB (64K x 16)
Core Processor
PIC
Speed
64MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
69
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 24x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
80-TFQFP
Controller Family/series
PIC18
Eeprom Memory Size
1024Byte
Ram Memory Size
4096Byte
Cpu Speed
16MIPS
No. Of Timers
11
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
I2C, SPI
Maximum Clock Frequency
64 MHz
Number Of Timers
11
Operating Supply Voltage
1.8 V to 5.5 V
Maximum Operating Temperature
+ 125 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
12 bit, 24 Channel
A/d Bit Size
12 bit
A/d Channels Available
24
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC18F87K90-I/PTRSL
Manufacturer:
Maxim
Quantity:
89
Part Number:
PIC18F87K90-I/PTRSL
Manufacturer:
Microchip Technology
Quantity:
10 000
PIC18F87K90 FAMILY
19.4.1
In Half-Bridge mode, two pins are used as outputs to
drive push-pull loads. The PWM output signal is output
on the PxA pin, while the complementary PWM output
signal is output on the PxB pin (see Figure 19-6). This
mode can be used for half-bridge applications, as
shown in Figure 19-7, or for full-bridge applications,
where four power switches are being modulated with
two PWM signals.
In Half-Bridge mode, the programmable dead-band delay
can be used to prevent shoot-through current in
half-bridge power devices. The value of the PxDC<6:0>
bits of the ECCPxDEL register sets the number of
instruction cycles before the output is driven active. If the
value is greater than the duty cycle, the corresponding
output remains inactive during the entire cycle. For more
details on the dead-band delay operations, see
Section 19.4.6 “Programmable Dead-Band Delay
Mode”.
FIGURE 19-7:
DS39957B-page 258
Standard Half-Bridge Circuit (“Push-Pull”)
Half-Bridge Output Driving a Full-Bridge Circuit
HALF-BRIDGE MODE
EXAMPLE OF HALF-BRIDGE APPLICATIONS
PxA
PxB
PxA
PxB
Preliminary
FET
Driver
FET
Driver
FET
Driver
FET
Driver
Since the PxA and PxB outputs are multiplexed with the
port data latches, the associated TRIS bits must be
cleared to configure PxA and PxB as outputs.
FIGURE 19-6:
PxA
PxB
td = Dead-Band Delay
Note 1: At this time, the TMR2 register is equal to the
(2)
(2)
2: Output signals are shown as active-high.
(1)
Load
V+
PR2 register.
td
Pulse Width
Period
Load
td
EXAMPLE OF
HALF-BRIDGE PWM
OUTPUT
 2010 Microchip Technology Inc.
FET
Driver
FET
Driver
(1)
+
-
+
-
Period
(1)

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