PIC16F84A-04/P Microchip Technology, PIC16F84A-04/P Datasheet - Page 271
![IC MCU FLASH 1KX14 EE 18DIP](/photos/6/76/67657/18-dip_300mil__sml.jpg)
PIC16F84A-04/P
Manufacturer Part Number
PIC16F84A-04/P
Description
IC MCU FLASH 1KX14 EE 18DIP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F688T-ISL.pdf
(688 pages)
2.PIC16F84A-04P.pdf
(88 pages)
3.PIC16F84A-04P.pdf
(6 pages)
Specifications of PIC16F84A-04/P
Program Memory Type
FLASH
Program Memory Size
1.75KB (1K x 14)
Package / Case
18-DIP (0.300", 7.62mm)
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Peripherals
POR, WDT
Number Of I /o
13
Eeprom Size
64 x 8
Ram Size
68 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
68 B
Maximum Clock Frequency
4 MHz
Number Of Programmable I/os
13
Number Of Timers
1
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 70 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
ICE2000
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
I3-DB16F84A - BOARD DAUGHTER ICEPIC3DVA16XP180 - ADAPTER DEVICE FOR MPLAB-ICEAC164010 - MODULE SKT PROMATEII DIP/SOIC
Data Converters
-
Connectivity
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F84A-04/P
Manufacturer:
MICROCHIP
Quantity:
1 450
- Current page: 271 of 688
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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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