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1997 Microchip Technology Inc.
DS30390E-page 279
PIC16C7X
U
UA ................................................................................78, 83
Universal Synchronous Asynchronous Receiver Transmitter
(USART) ............................................................................99
Update Address bit, UA ...............................................78, 83
USART
Asynchronous Mode ................................................106
Asynchronous Receiver ...........................................108
Asynchronous Reception .........................................109
Asynchronous Transmission ....................................107
Asynchronous Transmitter .......................................106
Baud Rate Generator (BRG) ....................................101
Receive Block Diagram ............................................108
Sampling ..................................................................104
Synchronous Master Mode ......................................110
Synchronous Master Reception ...............................112
Synchronous Master Transmission ..........................110
Synchronous Slave Mode ........................................114
Synchronous Slave Reception .................................114
Synchronous Slave Transmit ...................................114
Transmit Block Diagram ...........................................106
UV Erasable Devices ...........................................................7
W
W Register
ALU ..............................................................................9
Wake-up from SLEEP ......................................................145
Watchdog Timer (WDT) ...........................129, 133, 136, 144
WCOL ..........................................................................79, 84
WDT .................................................................................136
Block Diagram ..........................................................144
Period .......................................................................144
Programming Considerations ..................................144
Timeout ....................................................................136
Word ................................................................................129
WR pin ...............................................................................54
Write Collision Detect bit, WCOL .................................79, 84
X
XMIT_MODE ......................................................................98
Z
Z bit ....................................................................................30
Zero bit .................................................................................9
LIST OF EXAMPLES
Example 3-1:
Example 4-1:
Instruction Pipeline Flow............................17
Call of a Subroutine in Page 1
from Page 0..............................................41
Indirect Addressing....................................41
Initializing PORTA......................................43
Initializing PORTB......................................45
Initializing PORTC .....................................48
Read-Modify-Write Instructions
on an I/O Port ............................................53
Changing Prescaler (Timer0
→
WDT).........63
Changing Prescaler (WDT
→
Timer0).........63
Reading a 16-bit Free-Running Timer.......67
Example 10-1: Changing Between Capture
Prescalers.................................................73
Example 10-2: PWM Period and Duty Cycle
Calculation.................................................75
Example 11-1: Loading the SSPBUF (SSPSR)
Register ....................................................80
Example 11-2: Loading the SSPBUF (SSPSR)
Register (PIC16C76/77) ...........................85
Example 12-1: Calculating Baud Rate Error....................101
Equation 13-1: A/D Minimum Charging Time...................120
Example 13-1: Calculating the Minimum Required
Acquisition Time .....................................120
Example 13-2: A/D Conversion........................................122
Example 13-3: 4-bit vs. 8-bit Conversion Times..............123
Example 14-1: Saving STATUS, W, and PCLATH
Registers in RAM.....................................143
Example 4-2:
Example 5-1:
Example 5-2:
Example 5-3:
Example 5-4:
Example 7-1:
Example 7-2:
Example 8-1: