PIC16LF874A-I/PT Microchip Technology, PIC16LF874A-I/PT Datasheet - Page 151
![IC, 8BIT MCU, PIC16LF, 20MHZ, TQFP-44](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC16LF874A-I/PT
Manufacturer Part Number
PIC16LF874A-I/PT
Description
IC, 8BIT MCU, PIC16LF, 20MHZ, TQFP-44
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Specifications of PIC16LF874A-I/PT
Controller Family/series
PIC16LF
No. Of I/o's
33
Eeprom Memory Size
128Byte
Ram Memory Size
192Byte
Cpu Speed
20MHz
No. Of Timers
3
Core Size
8 Bit
Program Memory Size
4 Kwords
Core Processor
PIC
Speed
10MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
33
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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14.10 Power Control/Status Register
The Power Control/Status Register, PCON, has up to
two bits depending upon the device.
Bit 0 is the Brown-out Reset Status bit, BOR. The BOR
bit is unknown on a Power-on Reset. It must then be set
by the user and checked on subsequent Resets to see if
it has been cleared, indicating that a BOR has occurred.
TABLE 14-3:
TABLE 14-4:
TABLE 14-5:
2003 Microchip Technology Inc.
Legend: x = don’t care, u = unchanged
Power-on Reset
MCLR Reset during normal operation
MCLR Reset during Sleep
WDT Reset
WDT Wake-up
Brown-out Reset
Interrupt Wake-up from Sleep
Legend: u = unchanged, x = unknown, - = unimplemented bit, read as ‘0’
Note 1:
Oscillator Configuration
POR
0
0
0
1
1
1
1
1
XT, HS, LP
(PCON)
BOR
When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector
(0004h).
RC
x
x
x
0
1
1
1
1
TIME-OUT IN VARIOUS SITUATIONS
STATUS BITS AND THEIR SIGNIFICANCE
RESET CONDITIONS FOR SPECIAL REGISTERS
TO
1
0
x
1
0
0
u
1
Condition
PD
1
x
0
1
1
0
u
0
72 ms + 1024 T
Power-on Reset
Illegal, TO is set on POR
Illegal, PD is set on POR
Brown-out Reset
WDT Reset
WDT Wake-up
MCLR Reset during normal operation
MCLR Reset during Sleep or Interrupt Wake-up from Sleep
PWRTE = 0
72 ms
Power-up
OSC
PWRTE = 1
1024 T
Program
PC + 1
Counter
PC + 1
000h
000h
000h
000h
000h
—
OSC
When the Brown-out Reset is disabled, the state of the
BOR bit is unpredictable and is, therefore, not valid at
any time.
Bit 1 is the Power-on Reset Status bit, POR. It is
cleared on a Power-on Reset and unaffected other-
wise. The user must set this bit following a Power-on
Reset.
(1)
Condition
0001 1xxx
000u uuuu
0001 0uuu
0000 1uuu
uuu0 0uuu
0001 1uuu
uuu1 0uuu
72 ms + 1024 T
Register
Status
Brown-out
72 ms
PIC16F87XA
OSC
---- --0x
---- --uu
---- --uu
---- --uu
---- --uu
---- --u0
---- --uu
Register
DS39582B-page 149
Wake-up from
PCON
1024 T
Sleep
—
OSC
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