PIC16F1938-I/ML Microchip Technology, PIC16F1938-I/ML Datasheet - Page 93

• Manufacturer Part Number: PIC16F1938-I/ML
• Description: IC MCU 8BIT FLASH 28QFN
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16F1938-I/ML

• Core Size: 8-Bit
• Program Memory Size: 28KB (16K x 14)
• Oscillator Type: Internal
• Core Processor: PIC
• Speed: 32MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Controller Family/series: PIC16F
• No. Of I/o's: 25
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 1024Byte
• Cpu Speed: 32MHz
• Package: 28QFN EP
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 32 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 25
• Interface Type: I2C/SPI/USART
• On-chip Adc: 11-chx10-bit
• Number Of Timers: 5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6.3.3
The ANSELB register (Register 6-10) is used to
configure the Input mode of an I/O pin to analog.
Setting the appropriate ANSELB bit high will cause all
digital reads on the pin to be read as ‘0’ and allow
analog functions on the pin to operate correctly.
The state of the ANSELB bits has no affect on digital
output functions. A pin with TRIS clear and ANSELB set
will still operate as a digital output, but the Input mode
will be analog. This can cause unexpected behavior
when executing read-modify-write instructions on the
affected port.
REGISTER 6-9:
REGISTER 6-10:
© 2009 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
u = bit is unchanged
‘1’ = Bit is set
bit 7-0
bit 7
Legend:
R = Readable bit
u = bit is unchanged
‘1’ = Bit is set
bit 7-6
bit 5-0
Note 1:
R/W-1/1
TRISB7
U-0
—
ANSELB REGISTER
When setting a pin to an analog input, the corresponding TRIS bit must be set to Input mode in order to
allow external control of the voltage on the pin.
Unimplemented: Read as ‘0’
ANSB<5:0>: Analog Select between Analog or Digital Function on Pins RB<5:0>, respectively
0 = Digital I/O. Pin is assigned to port or digital special function.
1 = Analog input. Pin is assigned as analog input
TRISB<7:0>: PORTB Tri-State Control bit
1 = PORTB pin configured as an input (tri-stated)
0 = PORTB pin configured as an output
R/W-1/1
TRISB6
U-0
—
TRISB: PORTB TRI-STATE REGISTER
ANSELB: PORTB ANALOG SELECT REGISTER
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
R/W-1/1
R/W-1/1
ANSB5
TRISB5
R/W-1/1
R/W-1/1
TRISB4
ANSB4
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
R/W-1/1
TRISB3
R/W-1/1
ANSB3
PIC16F193X/LF193X
(1)
. Digital input buffer disabled.
R/W-1/1
TRISB2
R/W-1/1
ANSB2
R/W-1/1
R/W-1/1
TRISB1
ANSB1
DS41364C-page 93
R/W-1/1
R/W-1/1
ANSB0
TRISB0
bit 0
bit 0