PIC12LF1840T48A/T39A Programming Spec.

PIC12LF1840T48A/T39A
PIC12LF1840T48A/T39A Programming Specification
This document includes the
programming specifications for the
following devices:
1.1
Five pins are needed for ICSP™ programming. Two
additional pins should be connected to ground during
programming. The pins are listed in Table 1-1.
• PIC12LF1840T48A
• PIC12LF1840T39A
1.0
Pin Utilization
OVERVIEW
The PIC12LF1840T48A/T39A is a dual-die device
containing a Microchip PIC12LF1840 microcontroller
and an integrated transmitter. The dies are electrically
isolated.
Since the microcontroller portion of this device is a
standard PIC12LF1840, programming should be done
according
to
its
programming
specification,
“PIC16(L)F1847/12(L)F1840 Memory Programming
Specification” (DS41439).
The transmitter
memory.
contains
no
user-programmable
Care should be taken to prevent the transmitter from
transmitting during the programming cycle. In-Circuit
Serial Programming™ (ICSP™) pins should not be
connected to the DATA pin. If the transmitter VDD
supply is separate from the microcontroller, it should be
kept at VSS during the programming cycle.
TABLE 1-1:
Pin Name
PIN DESCRIPTIONS DURING PROGRAMMING
During Programming
Function
Pin Type
RA1
ICSPCLK
I/O
Clock Input – Schmitt Trigger Input
RA0
ICSPDAT
I/O
Data Input/Output – Schmitt Trigger Input
Program/Verify mode
P(1)
Program mode Select/Programming Power Supply
VDD
P
Microcontroller Power Supply
VSS
VSS
P
Microcontroller Ground
VDDRF
VDD
P
RF Power Supply
VSSRF
VSS
P
RF Ground
RA3/MCLR/VPP
VDD
Pin Description
Legend: I = Input, O = Output, P = Power
Note 1: The programming high voltage is internally generated. To activate the Program/Verify mode, high voltage
needs to be applied to MCLR input. Since the MCLR is used for a level source, MCLR does not draw any
significant current.
 2011-2012 Microchip Technology Inc.
Advance Information
DS41595B-page 1
PIC12LF1840T48A/T39A
2.0
DEVICE PINOUTS
The pin diagram for the PIC12LF1840T48A/T39A is
shown in Figure 2-1. The pins that are required for
programming are listed in Table 1-1 and shown in bold
lettering in the pin diagram.
DS41595B-page 2
Advance Information
 2011-2012 Microchip Technology Inc.
14-PIN DIAGRAM, PIC12LF1840T48A/T39A (TSSOP)
1
14
Vss
2
13
RA0/AN0/CPS0/C1IN+/DACOUT/TX(1)/CK(1)/SDO(1)/SS(1)/P1B(1)/MDOUT/ICSPDAT
(1)/P1B(1)/TX(1)/CK(1)/SDO(1)/CLKR/C1IN1-/T1OSO/CLKOUT/OSC2/CPS3/AN3/RA4
3
12
RA1/AN1/CPS1/VREF/C1IN0-/SRI/RX(1)/DT(1)/SCL/SCK/MDMIN/ICSPCLK
MCLR/VPP/T1G(1)/SS(1)/RA3
4
11
RA2/AN2/CPS2/C1OUT/SRQ/T0CKI/CCP1(1)/P1A(1)/FLT0/SDA/SDI/INT/MDCIN1
VDDRF
5
10
XTAL
CTRL
6
9
DATA
RFOUT
7
8
VSSRF
MDCIN2/T1G
Pin function is selectable via the APFCON register.
DS41595B-page 3
PIC12LF1840T48A/T39A
Advance Information
Note 1:
PIC12LF1840T39A
VDD
RX(1)/DT(1)/CCP1(1)/P1A(1)/SRNQ/T1CKI/T1OSI/OSC1/CLKIN/RA5
PIC12LF1840T48A
 2011-2012 Microchip Technology Inc.
FIGURE 2-1:
PIC12LF1840T48A/T39A
APPENDIX A:
REVISION HISTORY
Revision A (08/2011)
Initial release of this document.
Revision B (03/2012)
Added the PIC12LF1840T39A device.
DS41595B-page 4
Advance Information
 2011-2012 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
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•
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intended manner and under normal conditions.
•
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•
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•
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Printed on recycled paper.
ISBN: 9781620761151
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DS41595B-page 5
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