PIC16LC774-I/PQ Microchip Technology, PIC16LC774-I/PQ Datasheet - Page 85

• Manufacturer Part Number: PIC16LC774-I/PQ
• Description: 44 PIN, 7KB OTP, 256 RAM, 33 I/O,
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16LC774-I/PQ

• 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: 33
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: OTP
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 10x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-MQFP, 44-PQFP
• Processor Series: PIC16LC
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: I2C, SPI, SSP, UART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 3 bit
• Operating Supply Voltage: 2.5 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: ICE2000, DM163022
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

8.2.13
An acknowledge sequence is enabled by setting the
acknowledge
(SSPCON2<4>). When this bit is set, the SCL pin is
pulled low and the contents of the acknowledge data
bit is presented on the SDA pin. If the user wishes to
generate an acknowledge, then the AKDT bit should be
cleared. If not, the user should set the AKDT bit before
starting an acknowledge sequence. The baud rate
generator then counts for one rollover period (T
and the SCL pin is de-asserted (pulled high). When the
SCL pin is sampled high (clock arbitration), the baud
FIGURE 8-29: ACKNOWLEDGE SEQUENCE WAVEFORM
1999 Microchip Technology Inc.
ACKNOWLEDGE SEQUENCE TIMING
SSPIF
sequence
Acknowledge sequence starts here,
SDA
SCL
Note: T
Set SSPIF at the end
of receive
BRG
= one baud rate generator period.
AKEN = 1, AKDT = 0
enable
Write to SSPCON2
8
D0
bit,
Advance Information
AKEN
BRG
),
Cleared in
software
T
BRG
ACK
rate generator counts for T
pulled low. Following this, the AKEN bit is automati-
cally cleared, the baud rate generator is turned off, and
the SSP module then goes into IDLE mode.
29)
8.2.13.13 WCOL STATUS FLAG
If the user writes the SSPBUF when an acknowledege
sequence is in progress, then WCOL is set and the
contents of the buffer are unchanged (the write doesn’t
occur).
T
BRG
9
Set SSPIF at the end
of acknowledge sequence
AKEN automatically cleared
Cleared in
software
PIC16C77X
BRG
. The SCL pin is then
DS30275A-page 85
(Figure 8-