PIC16LF737-I/ML Microchip Technology, PIC16LF737-I/ML Datasheet - Page 148
![IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,LLCC,28PIN,PLASTIC](/photos/6/81/68120/150-28-qfn_sml.jpg)
PIC16LF737-I/ML
Manufacturer Part Number
PIC16LF737-I/ML
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,LLCC,28PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Specifications of PIC16LF737-I/ML
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
10MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
25
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Ram Size
368 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PIC16F7X7
11.3.2
Once Synchronous mode is selected, reception is
enabled
(RCSTA<5>) or enable bit, CREN (RCSTA<4>). Data is
sampled on the RC7/RX/DT pin on the falling edge of
the clock. If enable bit SREN is set, then only a single
word is received. If enable bit CREN is set, the recep-
tion is continuous until CREN is cleared. If both bits are
set, CREN takes precedence. After clocking the last bit,
the received data in the Receive Shift Register (RSR)
is transferred to the RCREG register (if it is empty).
When the transfer is complete, interrupt flag bit, RCIF
(PIR1<5>), is set. The actual interrupt can be enabled/
disabled
(PIE1<5>). Flag bit RCIF is a read-only bit which is
reset by the hardware. In this case, it is reset when the
RCREG register has been read and is empty. The
RCREG is a double-buffered register (i.e., it is a two-
deep FIFO). It is possible for two bytes of data to be
received and transferred to the RCREG FIFO and a
third byte to begin shifting into the RSR register. On the
clocking of the last bit of the third byte, if the RCREG
register is still full, then Overrun Error bit, OERR
(RCSTA<1>), is set. The word in the RSR will be lost.
The RCREG register can be read twice to retrieve the
two bytes in the FIFO. Bit OERR has to be cleared in
software (by clearing bit CREN). If bit OERR is set,
transfers from the RSR to the RCREG are inhibited, so
it is essential to clear bit OERR if it is set. The ninth
receive bit is buffered the same way as the receive
TABLE 11-11: REGISTERS ASSOCIATED WITH SYNCHRONOUS MASTER RECEPTION
DS30498C-page 146
0Bh, 8Bh,
10Bh,18Bh
0Ch
18h
1Ah
8Ch
98h
99h
Legend:
Note 1:
Address
by
by
x = unknown, — = unimplemented, read as ‘0’. Shaded cells are not used for synchronous master reception.
Bits PSPIE and PSPIF are reserved on 28-pin devices; always maintain these bits clear.
AUSART SYNCHRONOUS MASTER
RECEPTION
INTCON
PIR1
RCSTA
RCREG
PIE1
TXSTA
SPBRG
Name
setting
setting/clearing
AUSART Receive Register
Baud Rate Generator Register
PSPIE
PSPIF
SPEN
CSRC
Bit 7
GIE
either
(1)
(1)
ADIE
PEIE
ADIF
Bit 6
enable
RX9
TX9
enable
TMR0IE INT0IE
SREN
TXEN
RCIF
RCIE
Bit 5
bit,
bit,
SREN
RCIE
CREN ADDEN
SYNC
TXIE
Bit 4
TXIF
SSPIE
SSPIF
RBIE
Bit 3
—
data. Reading the RCREG register will load bit RX9D
with a new value; therefore, it is essential for the user
to read the RCSTA register before reading RCREG in
order not to lose the old RX9D information.
When setting up a Synchronous Master Reception:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. If any error occurred, clear the error by clearing
11. If using interrupts, ensure that GIE and PEIE
TMR0IF
CCP1IF TMR2IF TMR1IF 0000 0000
CCP1IE TMR2IE TMR1IE 0000 0000
BRGH
FERR
Bit 2
Initialize the SPBRG register for the appropriate
baud rate (see Section 11.1 “AUSART Baud
Rate Generator (BRG)”).
Enable the synchronous master serial port by
setting bits SYNC, SPEN and CSRC.
Ensure bits CREN and SREN are clear.
If interrupts are desired, then set enable bit
RCIE.
If 9-bit reception is desired, then set bit RX9.
If a single reception is required, set bit SREN.
For continuous reception, set bit CREN.
Interrupt flag bit RCIF will be set when reception
is complete and an interrupt will be generated if
enable bit RCIE was set.
Read the RCSTA register to get the ninth bit (if
enabled) and determine if any error occurred
during reception.
Read the 8-bit received data by reading the
RCREG register.
bit CREN.
(bits 7 and 6) of the INTCON register are set.
INT0IF
OERR
TRMT
Bit 1
RX9D
TX9D
Bit 0
RBIF
2004 Microchip Technology Inc.
0000 000x
0000 000x
0000 0000
0000 -010
0000 0000
POR, BOR
Value on:
0000 000u
0000 0000
0000 000x
0000 0000
0000 0000
0000 -010
0000 0000
Value on
all other
Resets
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