PIC16F685-E/SO Microchip Technology, PIC16F685-E/SO Datasheet - Page 4

• Manufacturer Part Number: PIC16F685-E/SO
• Description: IC PIC MCU FLASH 4KX14 20SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F685-E/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 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
• Connectivity: -

PIC16F631/677/685/687/689/690
Silicon Errata Issues
1. Module: EUSART (PIC16F687/689/690
1.1 WUE Bit is not clearing.
1.2 Auto-baud captures the incorrect baud rate
DS80243M-page 4
Note:
after a break.
After a wake-up due to a Break character,
the WUE bit is not automatically cleared.
Work around
Clear the WUE bit after waking up.
Fix
Rev. A5 Silicon and later revisions.
Affected Silicon Revisions
PIC16F687/PIC16F689/PIC16F690
The SPBRGH:SPBRG registers are not being
initialized correctly. If WUE and ABDEN are set at
the same time and a Break character followed by
a Sync character are received, then the
calculated baud rate will be random.
Work around
Set WUE and wait for the wake-up to occur.
Clear SPBRGH:SPBRG after waking up with the
break.
Set ABDEN to begin the auto-baud process.
Fix
Rev. A5 Silicon and later revisions.
Affected Silicon Revisions
PIC16F687/PIC16F689/PIC16F690
A3
A3
X
X
This document summarizes all silicon
errata issues from all revisions of silicon,
previous as well as current. Only the
issues indicated by the shaded column in
the following tables apply to the current
silicon revision.
A4
A4
X
X
only)
A5
A5
A6
A6
1.3 Auto-baud calculates a baud rate value that
1.4. Delay after auto-baud before transmit is
is +2.
allowed.
The SPBRGH:SPBRG are not initialized correctly
when ABDEN is set. This causes the measured
baud rate to be high by two counts.
Work around
Clearing the SPBRGH:SPBRG registers will
correctly initialize the baud rate counter. After the
auto-baud has been completed, the baud rate will
now be +1. The firmware should now subtract 1
from the Baud Rate Generator to produce the
correct baud rate.
Affected Silicon Revisions
PIC16F687/PIC16F689/PIC16F690
After the auto-baud Sync character has been
received and the RCIF flag is set, there is
approximately 17 ms of
transmitter is enabled.
Work around
After the RCIF flag is set indicating the baud rate
has been measured, read the SPBRG register
and write the value back to SPBRG. This will
terminate the delay, and enable the transmitter
module.
Affected Silicon Revisions
PIC16F687/PIC16F689/PIC16F690
Fix
Rev. A5 Silicon and later revisions.
Fix
Rev. A5 Silicon and later revisions.
A3
A3
X
X
A4
A4
X
X
A5
A5
 2010 Microchip Technology Inc.
A6
A6
delay before the