PIC16F819-I/ML Microchip Technology, PIC16F819-I/ML Datasheet - Page 320

• Manufacturer Part Number: PIC16F819-I/ML
• Description: IC MCU FLASH 2KX14 EEPROM 28QFN
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F819-I/ML

• Core Size: 8-Bit
• Program Memory Size: 3.5KB (2K x 14)
• Oscillator Type: Internal
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Controller Family/series: PIC16F
• No. Of I/o's: 16
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 256Byte
• Cpu Speed: 20MHz
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: I2C, SPI, SSP
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 1 x 16 bit
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 5 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28QFN3 - SOCKET TRAN ICE 18DIP/28QFNAC164322 - MODULE SOCKET MPLAB PM3 28/44QFNAC164033 - ADAPTER 28QFN TO 18DIPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Lead Free Status / Rohs Status: Details

PICmicro MID-RANGE MCU FAMILY
17.4.13
17.4.13.1 WCOL Status Flag
DS31017A-page 17-44
Acknowledge Sequence Timing
An acknowledge sequence is enabled by setting the acknowledge sequence enable bit, ACKEN
(SSPCON2<4>). When this bit is set, the SCL pin is pulled low and the contents of the acknowl-
edge data bit is presented on the SDA pin. If the user wishes to generate an acknowledge, then
the ACKDT bit should be cleared. If not, the user should set the ACKDT bit before starting an
acknowledge sequence. The baud rate generator then counts for one rollover period (T
the SCL pin is de-asserted (pulled high). When the SCL pin is sampled high (clock arbitration),
the baud rate generator counts for T
ACKEN bit is automatically cleared, the baud rate generator is turned off, and the SSP module
then goes into IDLE mode
If the user writes the SSPBUF when an acknowledge sequence is in progress, then WCOL is set
and the contents of the buffer are unchanged (the write doesn’t occur).
Figure 17-29: Acknowledge Sequence Waveform
SSPIF
Acknowledge sequence starts here,
SDA
SCL
Note: T
Set SSPIF at the end
of receive
BRG
= one baud rate generator period.
ACKEN = 1, ACKDT = 0
Write to SSPCON2
(Figure
Preliminary
8
D0
17-29).
BRG
. The SCL pin is then pulled low. Following this, the
Cleared in
software
T
BRG
ACK
T
BRG
9
Set SSPIF at the end
of acknowledge sequence
ACKEN automatically cleared
1997 Microchip Technology Inc.
Cleared in
software
BRG
), and