PIC16LC770-I/SS Microchip Technology, PIC16LC770-I/SS Datasheet - Page 125
![IC MCU OTP 2KX14 A/D PWM 20SSOP](/photos/6/58/65895/150-20-ssop_sml.jpg)
PIC16LC770-I/SS
Manufacturer Part Number
PIC16LC770-I/SS
Description
IC MCU OTP 2KX14 A/D PWM 20SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16LC770-I/SS
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
15
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
OTP
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Data Converters
A/D 6x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
PIC16LC770I/SS
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12.8
On power-up, the time-out sequence is as follows:
First PWRT time-out is invoked by the POR pulse.
When the PWRT delay expires, the Oscillator Start-up
Timer is activated. The total time-out will vary based on
oscillator configuration and the status of the PWRT.
For example, in RC mode with the PWRT disabled,
there will be no time-out at all. Figure 12-6, Figure 12-
7, Figure 12-8 and Figure 12-9 depict time-out
sequences on power-up.
Since the time-outs occur from the POR pulse, if MCLR
is kept low long enough, the time-outs will expire. Then
bringing MCLR high will begin execution immediately
(Figure 12-8). This is useful for testing purposes or to
synchronize more than one PICmicro
operating in parallel.
TABLE 12-3:
TABLE 12-4:
TABLE 12-5:
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, GIE = 0
Interrupt wake-up from SLEEP, GIE = 1
Legend: u = unchanged, x = unknown, - = unimplemented bit read as '0'.
Oscillator Configuration
POR
2002 Microchip Technology Inc.
0
0
0
1
1
1
1
1
EC, ER, INTRC
XT, HS, LP
Time-out Sequence
BOR
x
x
x
0
1
1
1
1
TIME-OUT IN VARIOUS SITUATIONS
STATUS BITS AND THEIR SIGNIFICANCE
RESET CONDITION FOR SPECIAL REGISTERS
TO
1
0
x
1
0
0
u
1
Condition
PD
1
x
0
1
1
0
u
0
T
PWRT
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
T
®
+ 1024T
PWRT
microcontroller
Power-up
OSC
PWRTE = 1
1024T
Program
Counter
PC + 1
PC + 1
0004h
000h
000h
000h
000h
000h
—
OSC
Table 12-5 shows the RESET conditions for some spe-
cial function registers, while Table 12-6 shows the
RESET conditions for all the registers.
12.9
The Power Control/STATUS Register, PCON, has two
status bits that provide indication of which power-up
type RESET occurred.
Bit0 is Brown-out Reset Status bit, BOR. The BOR bit
is unknown upon a POR. BOR must be set by the user
and checked on subsequent RESETS to see if bit BOR
cleared, indicating a BOR occurred.
Bit1 is POR (Power-on Reset Status bit). It is cleared on
a Power-on Reset and unaffected otherwise. The user
must set this bit following a Power-on Reset.
PIC16C717/770/771
Power Control/STATUS Register
(PCON)
T
PWRT
0001 1xxx
000u uuuu
0001 0uuu
0000 1uuu
uuu0 0uuu
0001 1uuu
uuu1 0uuu
uuu1 0uuu
Register
STATUS
Brown-out
T
+ 1024T
PWRT
OSC
---- 1-0x
---- 1-uu
---- 1-uu
---- 1-uu
---- u-uu
---- 1-u0
---- u-uu
---- u-uu
DS41120B-page 123
Wake-up from
Register
PCON
1024T
SLEEP
—
OSC
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