PIC12LF1840T-I/SN Microchip Technology, PIC12LF1840T-I/SN Datasheet - Page 203
![7 KB Flash, 256 Bytes RAM, 32 MHz Int. Osc, 6 I/0, Enhanced Mid Range Core, Nano](/photos/16/3/160347/soic8_sml.jpg)
PIC12LF1840T-I/SN
Manufacturer Part Number
PIC12LF1840T-I/SN
Description
7 KB Flash, 256 Bytes RAM, 32 MHz Int. Osc, 6 I/0, Enhanced Mid Range Core, Nano
Manufacturer
Microchip Technology
Series
PIC® XLP™ 12Fr
Datasheet
1.PIC12F1840-EMF.pdf
(382 pages)
Specifications of PIC12LF1840T-I/SN
Processor Series
PIC12F
Core
PIC
Program Memory Type
Flash
Program Memory Size
7 KB
Data Ram Size
256 B
Interface Type
MI2C, SPI, EUSART
Number Of Timers
3
Operating Supply Voltage
1.8 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SOIC-8
Development Tools By Supplier
MPLAB IDE Software
Minimum Operating Temperature
- 40 C
Core Processor
RISC
Core Size
8-Bit
Speed
32MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
5
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC12LF1840T-I/SN
Manufacturer:
ST
Quantity:
2 400
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24.4.4
In Half-Bridge applications where all power switches
are modulated at the PWM frequency, the power
switches normally require more time to turn off than to
turn on. If both the upper and lower power switches are
switched at the same time (one turned on, and the
other turned off), both switches may be on for a short
period of time until one switch completely turns off.
During this brief interval, a very high current (shoot-
through current) will flow through both power switches,
shorting the bridge supply. To avoid this potentially
destructive shoot-through current from flowing during
switching, turning on either of the power switches is
normally delayed to allow the other switch to
completely turn off.
In Half-Bridge mode, a digitally programmable dead-
band delay is available to avoid shoot-through current
from destroying the bridge power switches. The delay
occurs at the signal transition from the non-active state
to the active state. See
The lower seven bits of the associated PWM1CON
register
of microcontroller instruction cycles (T
FIGURE 24-13:
2011 Microchip Technology Inc.
Standard Half-Bridge Circuit (“Push-Pull”)
(Register
PROGRAMMABLE DEAD-BAND
DELAY MODE
24-3) sets the delay period in terms
EXAMPLE OF HALF-BRIDGE APPLICATIONS
Figure 24-12
CY
for illustration.
or 4 T
P1A
P1B
OSC
).
Preliminary
FET
Driver
FET
Driver
FIGURE 24-12:
P1A
P1B
td = Dead-Band Delay
Note 1: At this time, the TMR2 register is equal to the
(2)
(2)
V+
V-
2: Output signals are shown as active-high.
(1)
td
Pulse Width
PR2 register.
Load
Period
PIC12(L)F1840
td
EXAMPLE OF HALF-
BRIDGE PWM OUTPUT
+
V
-
+
V
-
(1)
DS41441B-page 203
Period
(1)
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