PIC16F884-E/P Microchip Technology, PIC16F884-E/P Datasheet - Page 7
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PIC16F884-E/P
Manufacturer Part Number
PIC16F884-E/P
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,DIP,40PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.MCP1631RD-MCC2.pdf
(328 pages)
3.PIC16F882-ISS.pdf
(16 pages)
4.PIC16F882-ISS.pdf
(36 pages)
Specifications of PIC16F884-E/P
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
35
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 14x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
DVA18XP400 - DEVICE ADAPTER 18F4220 PDIP 40LD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F884-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
6. Module: MSSP (I
FIGURE 1:
FIGURE 2:
© 2009 Microchip Technology Inc.
SDA
SCL
SDA
SCL
Master
Master
When the MSSP is I
slave device stretching the clock, the clock
generation does not function as described in the
data sheet.
When a slave device is performing clock stretching
by pulling the SCL line low, the master device
should continuously sample the SCL line to
determine when all slaves have released SCL.
When SCL is released, the master device should
wait one BRG period to ensure a constant SCL
high time.
The current implementation does not ensure
accurate SCL high time. During clock stretch, the
MSSP device will erroneously continue running
the BRG counter. At the end of the clock stretch
the BRG counter continues to count down for the
remainder of the BRG period, and then the MSSP
device will immediately resume transmitting the
data.
Slave
Slave
BRG Period
BRG Period
ACTUAL (CORRECT) OPERATION WITHOUT CLOCK STRETCHING
EXPECTED OPERATION WITH CLOCK STRETCHING
2
C™ Master Mode)
2
C™ Master mode with a
BRG Period
BRG Period
BRG Period
BRG Period
BRG Period
Figure 1 illustrates an expected I
in which the SCL line is completely controlled by
the master device and the slave device does not
attempt to stretch the clock period.
Figure 2 illustrates the expected operation of an
I
stretched the clock period by holding the SCL line
low. The high time of the SCL pulse is constant,
regardless of the duration of the clock stretch.
Figure 3 and Figure 4 illustrate an actual I
transmission in which the slave has stretched the
clock period by holding the SCL line low. Note that
the high time of the SCL signal has shortened from
the expected time.
2
C transmission in which the slave device has
BRG Period
PIC16F88X
BRG Period
BRG Period
DS80302F-page 7
2
C transmission
2
C