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ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller PDIP 18 8-Bit 4 MHz I/O number 13

 2003 Microchip Technology Inc. DS80072D-page 1

PIC16C712/716

The PIC16C712/716 parts you have received conform

functionally to the Device Data Sheet (DS41106A),

except for the anomalies described below.

The problem here will be addressed in future revisions

of the PIC16C712/716 silicon.

1. Module: CCP

When using the PIC16C712/716 in the Compare

or PWM mode, the TCCP bit of the TRISCCP

described in Figure 7-2 of the Device Data Sheet.

The TCCP bit of the TRISCCP register has no

effect on the output of pin RB3.

Work around

There is no way to tristate the output on pin RB3 in

the Compare or PWM mode. However, there are

steps you can do in firmware to stop the RB3 pin

from changing and leave it in a known state.

Examples are shown below.

EXAMPLE 1:

(Assumes that the T2CON and CCP1CON values are determined at assembly time and remain fixed.)

Code Example 1A:

;***********************************************************************

; Call these routines to turn the PWM off or on and ensure a Zero output on RB3

; when PWM is off.

;

; PWMreset - Clear T2CON Disabling Timer2 and Clearing Timer 2 Prescaler,

; then fill the TMR2 register with the CCPR1H value. This will cause

; a Reset or Zero value on RB3.

;

; PWMrestart - Restore the T2CON register with the appropriate value for your

; system needs. IT IS THE RESPONSIBILITY OF THE USER TO DETERMINE

; THE CORRECT VALUE FOR T2CON.

Assembly Code To Stop PWM Once Started:

PWMreset

bcf STATUS,RP0 ; Select Bank 0

clrf T2CON ; Clear T2CON, Timer2-Disable & Pre/Post Scalers = 1

movf CCPR1H,W ; Load CCPR1H value in Write register

movwf TMR2 ; Move CCPR1H value into TMR2 to cause Reset of RB3 pin

return

Note: The TCCP bit of the TRISCCP register

functions as described in Figure 7-2 of the

Device Data Sheet, when using the

MPLAB

ICE 2000 in-circuit emulator

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pany’s customer, for use solely and exclusively with products manufactured by the Company.

The software is owned by the Company and/or its supplier, and is protected under applicable copyright laws. All rights are reserved.

Any use in violation of the foregoing restrictions may subject the user to criminal sanctions under applicable laws, as well as to civil

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LAR PURPOSE APPLY TO THIS SOFTWARE. THE COMPANY SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR

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PIC16C712/716 Rev. A Silicon/Data Sheet Errata

Summary of content (14 pages)

PAGE 1
PIC16C712/716 PIC16C712/716 Rev. A Silicon/Data Sheet Errata The PIC16C712/716 parts you have received conform functionally to the Device Data Sheet (DS41106A), except for the anomalies described below. Note: The problem here will be addressed in future revisions of the PIC16C712/716 silicon. 1.
PAGE 2
PIC16C712/716 Assembly Code To Start PWM Once Stopped: PWMrestart bcf movlw movwf return STATUS,RP0 T2CONVAL T2CON ; ; ; ; Select Bank 0 Load T2CON value in ‘w’ register - USER RESPONSIBLE FOR SUPPLYING THE CORRECT T2CON VALUE. Initialize T2CON enabling scalers and Timer2 Code Example 1B: ;*********************************************************************** ; ; Call these routines to turn the CCP Mode off or on and ensure RB3 is a known Input or Output value when CCP Mode is off.
PAGE 3
PIC16C712/716 EXAMPLE 2: (Assumes that the T2CON and CCP1CON values may change during program execution. One SRAM location is used for temporary storage of T2CON or CCP2CON.) Code Example 2A: ;*********************************************************************** ; Call these routines to turn the PWM off or on and ensure a Zero output on RB3 ; when PWM is off. ; ; PWMreset - Saves T2CON value in RAM location. IT IS THE RESPONSIBILITY OF THE USER TO SUPPLY ; RAM MEMORY SPACE TO SAVE THE T2CON VALUE.
PAGE 4
PIC16C712/716 Code Example 2B: ;*********************************************************************** ; ; Call these routines to turn the CCP Mode off or on and ensure RB3 is a known Input or Output value when CCP Mode is off. ; ; ; ; ; ; CCPstop - First sets RB3 to an Input or an Output. If RB3 is an Output then it’s state is made either High or Low. The CCP is then Disabled. CCPstart - Enable CCP Mode. IT IS THE RESPONSIBILITY OF THE USER TO DETERMINE THE CORRECT VALUE FOR CCP1CON.
PAGE 5
PIC16C712/716 2. Module: Timer1 When Timer1 is configured to operate as an asynchronous counter, care must be taken that there is no incoming pulse while the module is being turned off. If an incoming pulse arrives while Timer1 is being turned off (i.e., TMR1ON transitions from 1 to 0), the value of registers TMR1L and TMR1H will be unpredictable. Work around This solution involves changing Timer1 from Asynchronous to Synchronous mode before turning off Timer1.
PAGE 6
PIC16C712/716 Clarifications/Corrections to the Data Sheet: In the Device Data Sheet (DS41106A), the following clarifications and corrections should be noted. 1. The following register and bit names need the following corrections: Page 2.
PAGE 7
PIC16C712/716 3. Figure 12-1, page 76, of the Device Data Sheet should show the following valid region of operation: FIGURE 12-5: PIC16C712/716 VOLTAGE-FREQUENCY GRAPH, -40°C ≤ TA ≤ +125°C 6.0 5.5 5.0 VDD (Volts) 4.5 4.0 3.5 3.0 2.5 2.0 0 4 20 10 40 30 Frequency (MHz) Note 1: The shaded region indicates the permissible combinations of voltage and frequency. 4. Parameter No. D001, page 77, of the Device Data Sheet should show the following values: 12.
PAGE 8
PIC16C712/716 5. Module: Packaging The package information contained in the data sheet is incorrect. Please refer to the following tables for correct package data. 18-Lead Plastic Dual In-line (P) – 300 mil (PDIP) E1 D 2 n α 1 E A2 A L c A1 B1 β p B eB Units Dimension Limits n p MIN INCHES* NOM 18 .100 .155 .130 MAX MILLIMETERS NOM 18 2.54 3.56 3.94 2.92 3.30 0.38 7.62 7.94 6.10 6.35 22.61 22.80 3.18 3.30 0.20 0.29 1.14 1.46 0.36 0.46 7.87 9.
PAGE 9
PIC16C712/716 18-Lead Plastic Small Outline (SO) – Wide, 300 mil (SOIC) E p E1 D 2 B n 1 h α 45° c A2 A φ β L Units Dimension Limits n p Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Chamfer Distance Foot Length Foot Angle Lead Thickness Lead Width Mold Draft Angle Top Mold Draft Angle Bottom A A2 A1 E E1 D h L φ c B α β MIN .093 .088 .004 .394 .291 .446 .010 .016 0 .009 .014 0 0 A1 INCHES* NOM 18 .050 .099 .
PAGE 10
PIC16C712/716 18-Lead Ceramic Dual In-line with Window (JW) – 300 mil (CERDIP) E1 D W2 2 n 1 W1 E A2 A c L A1 eB B1 p B Units Dimension Limits n p Number of Pins Pitch Top to Seating Plane Ceramic Package Height Standoff Shoulder to Shoulder Width Ceramic Pkg. Width Overall Length Tip to Seating Plane Lead Thickness Upper Lead Width Lower Lead Width Overall Row Spacing § Window Width Window Length * Controlling Parameter § Significant Characteristic JEDEC Equivalent: MO-036 Drawing No.
PAGE 11
PIC16C712/716 20-Lead Plastic Shrink Small Outline (SS) – 209 mil, 5.30 mm (SSOP) E E1 p D B 2 1 n α c A2 A φ L A1 β Units Dimension Limits n p Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Foot Length Lead Thickness Foot Angle Lead Width Mold Draft Angle Top Mold Draft Angle Bottom A A2 A1 E E1 D L c φ B α β MIN .068 .064 .002 .299 .201 .278 .022 .004 0 .010 0 0 INCHES* NOM 20 .026 .073 .068 .006 .309 .207 .284 .
PAGE 12
PIC16C712/716 APPENDIX A: REVISION HISTORY Rev. A Document (6/2000) First revision of this document. Rev. B Document (4/2001) Added issue 1 (CCP), page 1, and issue 2 (Timer1), page 5. Rev. C Document (1/2002) Under Clarifications/Corrections to the Data Sheet, Item 5 (SSOP), on page 8 was added. Rev. D Document (3/2003) Under Clarifications/Corrections to the Data Sheet, Item 5, Packaging: correct package data was added. DS80072D-page 12  2003 Microchip Technology Inc.
PAGE 13
Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature.
PAGE 14
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