PIC16LC774/PT Microchip Technology, PIC16LC774/PT Datasheet - Page 74
![IC MCU OTP 4KX14 A/D PWM 44TQFP](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC16LC774/PT
Manufacturer Part Number
PIC16LC774/PT
Description
IC MCU OTP 4KX14 A/D PWM 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16LC774/PT
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
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16LC774/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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PIC16C77X
8.2.9
To initiate a START condition, the user sets the start
condition enable bit, SEN (SSPCON2<0>). If the SDA
and SCL pins are sampled high, the baud rate genera-
tor is re-loaded with the contents of SSPADD<6:0>,
and starts its count. If SCL and SDA are both sampled
high when the baud rate generator times out (T
the SDA pin is driven low. The action of the SDA being
driven low while SCL is high is the START condition,
and causes the S bit (SSPSTAT<3>) to be set. Follow-
ing this, the baud rate generator is reloaded with the
contents of SSPADD<6:0> and resumes its count.
When the baud rate generator times out (T
SEN bit (SSPCON2<0>) will be automatically cleared
by hardware, the baud rate generator is suspended
leaving the SDA line held low, and the START condition
is complete.
FIGURE 8-20: FIRST START BIT TIMING
DS30275A-page 74
Note:
I
TIMING
2
C MASTER MODE START CONDITION
If at the beginning of START condition the
SDA and SCL pins are already sampled
low, or if during the START condition the
SCL line is sampled low before the SDA
line is driven low, a bus collision occurs, the
Bus Collision Interrupt Flag (BCLIF) is set,
the START condition is aborted, and the
I
2
C module is reset into its IDLE state.
Write to SEN bit occurs here.
SDA
SCL
Advance Information
BRG
SDA = 1,
SCL = 1
T
), the
BRG
BRG
),
Set S bit (SSPSTAT<3>)
S
T
BRG
At completion of start bit,
Hardware clears SEN bit
8.2.9.5
If the user writes the SSPBUF when an START
sequence is in progress, then WCOL is set and the
contents of the buffer are unchanged (the write doesn’t
occur).
and sets SSPIF bit
Note:
T
Write to SSPBUF occurs here
BRG
1st Bit
WCOL STATUS FLAG
Because queueing of events is not
allowed, writing to the lower 5 bits of
SSPCON2 is disabled until the START
condition is complete.
T
BRG
1999 Microchip Technology Inc.
2nd Bit
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