PIC16F1827-I/ML Microchip Technology Inc., PIC16F1827-I/ML Datasheet - Page 157
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PIC16F1827-I/ML
Manufacturer Part Number
PIC16F1827-I/ML
Description
28 QFN 6x6mm TUBE, 7 KB Flash, 384 bytes RAM, 32 MHz Int. Osc, 16 I/0, Enhanced
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F1826-ISO.pdf
(406 pages)
Specifications of PIC16F1827-I/ML
A/d Inputs
12-Channel, 10-Bit
Comparators
2
Cpu Speed
8 MIPS
Eeprom Memory
256 Bytes
Input Output
16
Interface
CAN/I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin QFN
Programmable Memory
7K Bytes
Ram Size
384 Bytes
Speed
32 MHz
Timers
4-8-bit, 1-16-bit
Voltage, Range
1.8-5.5 V
Standby Current (pic16lf182x)
30 nA @ 1.8 V, Typical
Lead Free Status / Rohs Status
RoHS Compliant part
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18.0
The module consists of a single SR Latch with multiple
Set and Reset inputs as well as separate latch outputs.
The SR Latch module includes the following features:
• Programmable input selection
• SR Latch output is available externally
• Separate Q and Q outputs
• Firmware Set and Reset
The SR Latch can be used in a variety of analog appli-
cations, including oscillator circuits, one-shot circuit,
hysteretic controllers, and analog timing applications.
18.1
The latch is a Set-Reset Latch that does not depend on
a clock source. Each of the Set and Reset inputs are
active-high. The latch can be Set or Reset by:
• Software control (SRPS and SRPR bits)
• Comparator C1 output (SYNCC1OUT)
• Comparator C2 output (SYNCC2OUT)
• SRI pin
• Programmable clock (SRCLK)
The SRPS and the SRPR bits of the SRCON0 register
may be used to set or reset the SR Latch, respectively.
The latch is Reset-dominant. Therefore, if both Set and
Reset inputs are high, the latch will go to the Reset
state. Both the SRPS and SRPR bits are self resetting
which means that a single write to either of the bits is all
that is necessary to complete a latch Set or Reset oper-
ation.
The output from Comparator C1 or C2 can be used as
the Set or Reset inputs of the SR Latch. The output of
either comparator can be synchronized to the Timer1
clock source. See
ule”
Control”
An external source on the SRI pin can be used as the
Set or Reset inputs of the SR Latch.
An internal clock source is available that can periodically
set or reset the SR Latch. The SRCLK<2:0> bits in the
SRCON0 register are used to select the clock source
period. The SRSCKE and SRRCKE bits of the SRCON1
register enable the clock source to set or reset the SR
Latch, respectively.
2011 Microchip Technology Inc.
Note:
and
SR LATCH
Latch Operation
for more information.
Section 21.0 “Timer1 Module with Gate
Enabling both the Set and Reset inputs
from any one source at the same time
may result in indeterminate operation, as
the Reset dominance cannot be assured.
Section 19.0 “Comparator Mod-
18.2
The SRQEN and SRNQEN bits of the SRCON0 regis-
ter control the Q and Q latch outputs. Both of the SR
Latch outputs may be directly output to an I/O pin at the
same time.
The applicable TRIS bit of the corresponding port must
be cleared to enable the port pin output driver.
18.3
Upon any device Reset, the SR Latch output is not ini-
tialized to a known state. The user’s firmware is
responsible for initializing the latch output before
enabling the output pins.
PIC16(L)F1826/27
Latch Output
Effects of a Reset
DS41391D-page 157
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