PIC16LC770-E/SS Microchip Technology, PIC16LC770-E/SS Datasheet - Page 48
![IC MCU OTP 2KX14 A/D PWM 20SSOP](/photos/6/58/65895/150-20-ssop_sml.jpg)
PIC16LC770-E/SS
Manufacturer Part Number
PIC16LC770-E/SS
Description
IC MCU OTP 2KX14 A/D PWM 20SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16LC770-E/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 ~ 125°C
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
PIC16LC770E/SS
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16LC770-E/SS
Manufacturer:
MICROCHIP
Quantity:
4 000
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PIC16C717/770/771
5.2.1
The prescaler assignment is fully under software con-
trol (i.e., it can be changed “on-the-fly” during program
execution).
FIGURE 5-2:
TABLE 5-1:
DS41120B-page 46
Address
01h,101h
0Bh,8Bh,
10Bh,18Bh
81h,181h
85h
Legend: x = unknown, u = unchanged, - = unimplemented locations read as ’0’. Shaded cells are not used by Timer0.
Note:
RA4/T0CKI
CLKOUT (= Fosc/4)
WDT Enable Bit
Watchdog
Note: T0CS, T0SE, PSA, PS<2:0> are (OPTION_REG<5:0>).
Pin
Timer
To avoid an unintended device RESET, a
specific instruction sequence (shown in the
PICmicro™ Mid-Range Reference Man-
ual, DS33023) must be executed when
changing the prescaler assignment from
Timer0 to the WDT. This sequence must
be followed even if the WDT is disabled.
SWITCHING PRESCALER
ASSIGNMENT
Name
TMR0
INTCON
OPTION_REG
TRISA
BLOCK DIAGRAM OF THE TIMER0/WDT PRESCALER
REGISTERS ASSOCIATED WITH TIMER0
T0SE
0
1
Timer0 register
PORTA Data Direction Register
RBPU INTEDG T0CS
Bit 7
GIE
PSA
M
U
X
0
1
PEIE
Bit 6
T0CS
M
U
X
Bit 5
T0IE
0
8-bit Prescaler
8 - to - 1MUX
Time-out
8
M U X
WDT
T0SE
INTE
Bit 4
1
0
1
PSA
M
U
X
RBIE
Bit 3
PSA
5.3
The TMR0 interrupt is generated when the TMR0 reg-
ister overflows from FFh to 00h. This overflow sets bit
T0IF (INTCON<2>). The interrupt can be masked by
clearing bit T0IE (INTCON<5>). Bit T0IF must be
cleared in software by the Timer0 module interrupt ser-
vice routine before re-enabling this interrupt. The
TMR0 interrupt cannot awaken the processor from
SLEEP since the timer is shut off during SLEEP.
PSA
Bit 2
T0IF
PS2
PS<2:0>
Timer0 Interrupt
Cycles
SYNC
2
Bit 1
INTF
PS1
RBIF
Bit 0
PS0
2002 Microchip Technology Inc.
TMR0 reg
Data Bus
xxxx xxxx
0000 000x
1111 1111
1111 1111
Value on:
POR,
BOR
8
Set flag bit T0IF
on Overflow
Value on all
uuuu uuuu
0000 000u
1111 1111
1111 1111
RESETS
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