PIC16F1938-I/ML Microchip Technology, PIC16F1938-I/ML Datasheet - Page 337

• 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

25.0
ICSP™ programming allows customers to manufacture
circuit boards with unprogrammed devices. Programming
can be done after the assembly process allowing the
device to be programmed with the most recent firmware
or a custom firmware. Five pins are needed for ICSP™
programming:
• ICSPCLK
• ICSPDAT
• MCLR/V
• V
• V
In Program/Verify mode the Program Memory, User
IDs and the Configuration Words are programmed
through serial communications. The ICSPDAT pin is a
bidirectional I/O used for transferring the serial data
and the ICSPCLK pin is the clock input. For more infor-
mation
“PIC16193X/PIC16LF193X
Specification” (DS41360A)
25.1
The device is placed into high-voltage Program/Verify
mode by holding the ICSPCLK and ICSPDAT pins low
then raising the voltage on MCLR/V
FIGURE 25-1:
© 2009 Microchip Technology Inc.
DD
SS
IN-CIRCUIT SERIAL
PROGRAMMING™ (ICSP™)
High-voltage Programming Mode
PP
on
External
Programming
Signals
ICSP™
TYPICAL CONNECTION FOR ICSP™ PROGRAMMING
Clock
Data
V
V
V
DD
PP
SS
Memory
refer
PP
to V
Programming
IHH
*
To Normal Connections
to
.
Preliminary
the
*
V
DD
25.2
The Low-Voltage Programming mode allows the
PIC16F193X/LF193X devices to be programmed using
V
Configuration Word 2 register is set to ‘1’, the
low-voltage ICSP programming entry is enabled. To
disable the Low-Voltage ICSP mode, the LVP bit must
be programmed to ‘0’.
Entry into the Low-Voltage ICSP Program/Verify modes
requires the following steps:
1.
2.
Once the key sequence is complete, MCLR must be
held at V
maintained.
PIC16F193X/LF193X
DD
Note:
*
MCLR is brought to V
A 32-bit key sequence is presented on
ICSPDAT, while clocking ICSPCLK.
only, without high voltage. When the LVP bit of the
10k
IL
Low-Voltage Programming Mode
for as long as Program/Verify mode is to be
The ICD 2 produces a V
than the maximum V
PIC16F193X/LF193X. When using this
programmer, an external circuit is required
to keep the V
specifications.
*
Isolation devices (as required).
V
MCLR/V
V
ICSPDAT
ICSPCLK
Device to be
Programmed
DD
SS
PP
IL
PP
.
voltage within the device
PP
specification of the
DS41364C-page 337
PP
voltage greater