PIC17LC752T-08/L Microchip Technology, PIC17LC752T-08/L Datasheet - Page 152
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PIC17LC752T-08/L
Manufacturer Part Number
PIC17LC752T-08/L
Description
IC MCU OTP 8KX16 A/D 68PLCC
Manufacturer
Microchip Technology
Series
PIC® 17Cr
Specifications of PIC17LC752T-08/L
Core Processor
PIC
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
50
Program Memory Size
16KB (8K x 16)
Program Memory Type
OTP
Ram Size
678 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
68-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC17LC752T-08/L
Manufacturer:
Microchip Technology
Quantity:
10 000
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PIC17C7XX
15.2.6
In Multi-Master mode, the interrupt generation on the
detection of the START and STOP conditions allows
the determination of when the bus is free. The STOP
(P) and START (S) bits are cleared from a RESET, or
when the MSSP module is disabled. Control of the I
bus may be taken when bit P (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 gener-
ate the interrupt when the STOP condition occurs.
In Multi-Master operation, the SDA line must be moni-
tored for arbitration, to see if the signal level is the
expected output level. This check is performed in hard-
ware, with the result placed in the BCLIF bit.
The states where arbitration can be lost are:
• Address Transfer
• Data Transfer
• A START Condition
• A Repeated Start Condition
• An Acknowledge Condition
15.2.7
Master mode is enabled by setting and clearing the
appropriate SSPM bits in SSPCON1 and by setting the
SSPEN bit. Once Master mode is enabled, the user
has six options.
• Assert a START condition on SDA and SCL.
• Assert a Repeated Start condition on SDA and
• Write to the SSPBUF register initiating
• Generate a STOP condition on SDA and SCL.
• Configure the I
• Generate an Acknowledge condition at the end of
DS30289B-page 152
SCL.
transmission of data/address.
a received byte of data.
Note:
The MSSP Module, when configured in I
Master mode, does not allow queueing of
events. For instance: The user is not
allowed to initiate a START condition and
immediately write the SSPBUF register to
initiate transmission before the START
condition is complete. In this case, the
SSPBUF will not be written to and the
WCOL bit will be set, indicating that a write
to the SSPBUF did not occur.
MULTI-MASTER MODE
I
2
C MASTER MODE SUPPORT
2
C port to receive data.
2
2
C
C
15.2.7.1
The master device generates all of the serial clock
pulses and the START and STOP conditions. A transfer
is ended with a STOP condition or with a Repeated
Start condition. Since the Repeated Start condition is
also the beginning of the next serial transfer, the I
bus will not be released.
In Master Transmitter mode, serial data is output
through SDA, while SCL outputs the serial clock. The
first byte transmitted contains the slave address of the
receiving device (7 bits) and the Read/Write (R/W) bit.
In this case, the R/W bit will be logic '0'. Serial data is
transmitted 8 bits at a time. After each byte is transmit-
ted, an acknowledge bit is received. START and STOP
conditions are output to indicate the beginning and the
end of a serial transfer.
In Master Receive mode, the first byte transmitted con-
tains the slave address of the transmitting device
(7 bits) and the R/W bit. In this case, the R/W bit will be
logic '1'. Thus, the first byte transmitted is a 7-bit slave
address, followed by a '1' to indicate receive bit. Serial
data is received via SDA, while SCL outputs the serial
clock. Serial data is received 8 bits at a time. After each
byte is received, an acknowledge bit is transmitted.
START and STOP conditions indicate the beginning
and end of transmission.
The baud rate generator used for SPI mode operation
is now used to set the SCL clock frequency for either
100 kHz, 400 kHz, or 1 MHz I
rate generator reload value is contained in the lower 7
bits of the SSPADD register. The baud rate generator
will automatically begin counting on a write to the SSP-
BUF. Once the given operation is complete (i.e., trans-
mission of the last data bit is followed by ACK), the
internal clock will automatically stop counting and the
SCL pin will remain in its last state
I
2
C Master Mode Operation
2000 Microchip Technology Inc.
2
C operation. The baud
2
C
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