PIC16F687-E/SO Microchip Technology, PIC16F687-E/SO Datasheet - Page 135

• Manufacturer Part Number: PIC16F687-E/SO
• Description: IC PIC MCU FLASH 2KX14 20SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F687-E/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 18
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SOIC (7.5mm Width)
• For Use With: XLT20SO1-1 - SOCKET TRANS ICE 20DIP TO 20SOICAC162061 - HEADER INTRFC MPLAB ICD2 20PINAC164039 - MODULE SKT PROMATE II 20DIP/SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FIGURE 11-5:
TABLE 11-4:
© 2008 Microchip Technology Inc.
ECCP Mode
Single
Half-Bridge
Full-Bridge, Forward
Full-Bridge, Reverse
Note 1:
Note 1: The TRIS register value for each PWM output must be configured appropriately.
CCPR1H (Slave)
Duty Cycle Registers
Note 1:
Comparator
2: Clearing the CCP1CON register will relinquish ECCP control of all PWM output pins.
3: Any pin not used by an Enhanced PWM mode is available for alternate pin functions
CCPR1L
PR2
TMR2
Comparator
Pulse Steering enables outputs in Single mode.
The 8-bit timer TMR2 register is concatenated with the 2-bit internal Q clock, or 2 bits of the prescaler to create the 10-bit
time base.
EXAMPLE PIN ASSIGNMENTS FOR VARIOUS PWM ENHANCED MODES
(1)
EXAMPLE SIMPLIFIED BLOCK DIAGRAM OF THE ENHANCED PWM MODE
Clear Timer2,
toggle PWM pin and
latch duty cycle
DC1B<1:0>
P1M<1:0>
00
10
01
11
PIC16F631/677/685/687/689/690
R
S
P1M<1:0>
Q
CCP1/P1A
Yes
Yes
Yes
Yes
(1)
PWM1CON
Controller
Output
2
CCP1/P1A
P1B
P1C
P1D
4
CCP1M<3:0>
Yes
P1B
Yes
Yes
Yes
TRIS
TRIS
TRIS
TRIS
(1)
Yes
P1C
Yes
Yes
No
(1)
CCP1/P1A
P1B
P1D
P1C
DS41262E-page 133
Yes
P1D
Yes
Yes
No
(1)