PIC12C672-04E/MF Microchip Technology, PIC12C672-04E/MF Datasheet - Page 271
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PIC12C672-04E/MF
Manufacturer Part Number
PIC12C672-04E/MF
Description
IC PIC MCU 2KX14 8DFN
Manufacturer
Microchip Technology
Series
PIC® 12Cr
Datasheets
1.PIC16F688T-ISL.pdf
(688 pages)
2.PIC12CE673-10P.pdf
(129 pages)
3.PIC12CE673-10P.pdf
(14 pages)
Specifications of PIC12C672-04E/MF
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Peripherals
POR, WDT
Number Of I /o
5
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
OTP
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 4x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
8-DFN
For Use With
AC164324 - MODULE SKT FOR MPLAB 8DFN/16QFNXLT08DFN2 - SOCKET TRANSITION ICE 14DIP/8DFNXLT08DFN - SOCKET TRANSITION ICE 8DFNAC164032 - ADAPTER PICSTART PLUS 8DFN/DIPAC124001 - MODULE SKT PROMATEII 8DIP/SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
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- Download datasheet (3Mb)
16.4.2
16.4.3
1997 Microchip Technology Inc.
Master Mode (Firmware)
Multi-Master Mode (Firmware)
Master mode of operation is supported by interrupt generation on the detection of the START and
STOP conditions. The STOP (P) and START (S) bits are cleared from a reset or when the SSP
module is disabled. Control of the I
with both the S and P bits clear.
In master mode the SCL and SDA lines are manipulated by clearing the corresponding TRIS
bit(s). The output level is always low, irrespective of the value(s) in PORT. So when transmitting
data, a '1' data bit must have the TRIS bit set (input) and a '0' data bit must have the TRIS bit
cleared (output). The same scenario is true for the SCL line with the TRIS bit.
The following events will cause the SSPIF Interrupt Flag bit to be set (SSP Interrupt if enabled):
• START condition
• STOP condition
• Data transfer byte transmitted/received
Master mode of operation can be done with either the slave mode idle (SSPM3:SSPM0 = 1011)
or with the slave active (SSPM3:SSP0 = 1110 or 1111). When the slave modes are enabled, the
software needs to differentiate the source(s) of the interrupt.
In multi-master mode, the interrupt generation on the detection of the START and STOP condi-
tions allows the determination of when the bus is free. The STOP (P) and START (S) bits are
cleared from a reset or when the SSP module is disabled. Control of the I
when the P bit (SSPSTAT<4>) is set, or the bus is idle with both the S and P bits clear. When the
bus is busy, enabling the SSP Interrupt will generate the interrupt when the STOP condition
occurs.
In multi-master operation, the SDA line must be monitored to see if the signal level is the
expected output level. This check only needs to be done when a high level is output. If a high level
is expected and a low level is present, the device needs to release the SDA and SCL lines (set
the TRIS bits). There are two stages where this arbitration can be lost, they are:
• Address Transfer
• Data Transfer
When the slave logic is enabled, the slave continues to receive. If arbitration was lost during the
address transfer stage, communication to the device may be in progress. If addressed an ACK
pulse will be generated. If arbitration was lost during the data transfer stage, the device will need
to re-transfer the data at a later time.
2
C bus may be taken when the P bit is set, or the bus is idle
Section 16. BSSP
2
DS31016A-page 16-21
C bus may be taken
16
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