PIC16F1937-I/P Microchip Technology, PIC16F1937-I/P Datasheet - Page 101

• Manufacturer Part Number: PIC16F1937-I/P
• Description: IC PIC MCU FLASH 512KX14 40-PDIP
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16F1937-I/P

• Program Memory Type: FLASH
• Program Memory Size: 14KB (8K x 14)
• Package / Case: 40-DIP (0.600", 15.24mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 32MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 36
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: EUSART/MI2C/SPI
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 5
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 14-ch x 10-bit
• A/d Bit Size: 10 bit
• A/d Channels Available: 14
• Height: 4.95 mm
• Length: 53.21 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V
• Width: 14.73 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

6.6
PORTE
corresponding data direction register is TRISE. Setting a
TRISE bit (= 1) will make the corresponding PORTE pin
an input (i.e., put the corresponding output driver in a
High-Impedance mode). Clearing a TRISE bit (= 0) will
make the corresponding PORTE pin an output (i.e.,
enable the output driver and put the contents of the
output latch on the selected pin). The exception is RE3,
which is input only and its TRIS bit will always read as
‘1’. Example 6-5 shows how to initialize PORTE.
Reading the PORTE register (Register 6-18) reads the
status of the pins, whereas writing to it will write to the
PORT latch. All write operations are read-modify-write
operations. Therefore, a write to a port implies that the
REGISTER 6-18:
REGISTER 6-19:
© 2008 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
u = bit is unchanged
‘1’ = Bit is set
bit 7-4
bit 3-0
Note 1:
bit 7
Legend:
R = Readable bit
u = bit is unchanged
‘1’ = Bit is set
bit 7-4
bit 3-0
Note 1:
U-0
U-0
—
—
(1)
PORTE and TRISE Registers
is a 4-bit wide, bidirectional port. The
RE<2:0> are not implemented on the PIC16F1933/1936/1938. Read as ‘0’.
Writes to PORTE are actually written to corresponding LATE register. Reads from PORTE register is
return of actual I/O pin values.
Unimplemented: Read as ‘0’
RE<3:0>: PORTE I/O Pin bits
1 = Port pin is > V
0 = Port pin is < V
Unimplemented: Read as ‘0’
LATE<3:0>: PORTE Output Latch Value bits
U-0
U-0
—
—
PORTE: PORTE REGISTER
LATE: PORTE DATA LATCH REGISTER
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
IH
IL
U-0
U-0
—
—
(1)
U-0
U-0
Preliminary
—
—
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
(1)
R/W-x/u
LATE3
port pins are read, this value is modified and then
written to the PORT data latch. RE3 reads ‘0’ when
MCLRE = 1.
EXAMPLE 6-5:
R-x/u
RE3
BANKSEL PORTE
CLRF
BANKSEL ANSELE
CLRF
BANKSEL TRISE
MOVLW
MOVWF
PIC16F193X/LF193X
Note 1: RE<2:0> and TRISE<2:0> pins are
PORTE
ANSELE
B‘00001100’
TRISE
available
PIC16F1938 only.
R/W-x/u
R/W-x/u
RE2
LATE2
(1)
INITIALIZING PORTE
;
;Init PORTE
;
;digital I/O
;
;Set RE<3:2> as inputs
;and set RE<1:0>
;as outputs
on
R/W-x/u
R/W-x/u
LATE1
RE1
PIC16F1936
(1)
DS41364A-page 99
R/W-x/u
R/W-x/u
RE0
LATE0
(1)
bit 0
bit 0
and