PIC18F87K90-E/PT Microchip Technology, PIC18F87K90-E/PT Datasheet - Page 208

• Manufacturer Part Number: PIC18F87K90-E/PT
• Description: 128kB Flash, 4kB RAM, 1kB EE, 16MIPS, NanoWatt XLP, LCD, 5V 80 TQFP 12x12x1mm TR
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F87K90-E/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 64MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 128KB (64K x 16)
• 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 ~ 125°C
• Package / Case: 80-TQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F87K90 FAMILY
15.5.4
When Timer3/5/7 Gate Single Pulse mode is enabled,
it is possible to capture a single pulse gate event.
Timer3/5/7 Gate Single Pulse mode is first enabled by
setting the TxGSPM bit (TxGCON<4>). Next, the
TxGGO/TxDONE bit (TxGCON<3>) must be set.
The Timer3/5/7 will be fully enabled on the next incre-
menting edge. On the next trailing edge of the pulse,
the TxGGO/TxDONE bit will automatically be cleared.
FIGURE 15-4:
DS39957D-page 208
Timer3/5/7
TMRxGIF
TMRxGE
TxGSPM
TxDONE
TxGPOL
TxGGO/
TxGVAL
TxG_IN
T1CKI
TIMER3/5/7 GATE SINGLE PULSE
MODE
TIMER3/5/7 GATE SINGLE PULSE MODE
Cleared by Software
N
Counting Enabled on
Set by Software
Rising Edge of TxG
N + 1
No other gate events will be allowed to increment
Timer3/5/7 until the TxGGO/TxDONE bit is once again
set in software.
Clearing the TxGSPM bit also will clear the TxGGO/
TxDONE bit. (For timing details, see
Simultaneously enabling the Toggle mode and the
Single Pulse mode will permit both sections to work
together. This allows the cycle times on the Timer3/5/7
gate source to be measured. (For timing details, see
Figure
15-5.)
Set by Hardware on
Falling Edge of TxGVAL
Cleared by Hardware on
Falling Edge of TxGVAL
N + 2
 2009-2011 Microchip Technology Inc.
Figure
Software
Cleared by
15-4.)