PIC16LF88-I/SS Microchip Technology, PIC16LF88-I/SS Datasheet - Page 78
![IC MCU FLASH 4KX14 EEPROM 20SSOP](/photos/6/58/65895/150-20-ssop_sml.jpg)
PIC16LF88-I/SS
Manufacturer Part Number
PIC16LF88-I/SS
Description
IC MCU FLASH 4KX14 EEPROM 20SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16LF627A-IP.pdf
(8 pages)
2.PIC16F818-ISO.pdf
(6 pages)
3.PIC16F87-IP.pdf
(228 pages)
4.PIC16F87-IP.pdf
(8 pages)
5.PIC16F87-IP.pdf
(4 pages)
6.PIC16F87-IP.pdf
(8 pages)
7.PIC16F88-ISO.pdf
(214 pages)
Specifications of PIC16LF88-I/SS
Program Memory Type
FLASH
Program Memory Size
7KB (4K x 14)
Package / Case
20-SSOP
Core Processor
PIC
Core Size
8-Bit
Speed
10MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Eeprom Size
256 x 8
Ram Size
368 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 7x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC16LF
Core
PIC
Data Bus Width
8 bit
Data Ram Size
368 B
Interface Type
SSP/USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
16
Number Of Timers
3
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014
Minimum Operating Temperature
- 40 C
On-chip Adc
7-ch x 10-bit
Package
20SSOP
Device Core
PIC
Family Name
PIC16
Maximum Speed
20 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16LF88-I/SS
Manufacturer:
MICROCHIP
Quantity:
3 000
Company:
Part Number:
PIC16LF88-I/SS
Manufacturer:
MICROCHI
Quantity:
86
PIC16F87/88
7.9
TMR1H and TMR1L registers are not reset to 00h on a
POR, or any other RESET, except by the CCP1 special
event triggers.
T1CON register is reset to 00h on a Power-on Reset or
a Brown-out Reset, which shuts off the timer and
leaves a 1:1 prescale. In all other RESETS, the register
is unaffected.
7.10
The prescaler counter is cleared on writes to the
TMR1H or TMR1L registers.
DS30487B-page 76
Resetting Timer1 Register Pair
(TMR1H, TMR1L)
Timer1 Prescaler
Preliminary
7.11
Adding an external LP oscillator to Timer1 (such as the
one described in Section 7.6 “Timer1 Oscillator”,
above), gives users the option to include RTC function-
ality to their applications. This is accomplished with an
inexpensive watch crystal to provide an accurate time
base, and several lines of application code to calculate
the time. When operating in SLEEP mode and using a
battery or super capacitor as a power source, it can
completely eliminate the need for a separate RTC
device and battery backup.
The application code routine, RTCisr, shown in
Example 7-3, demonstrates a simple method to incre-
ment a counter at one-second intervals using an Inter-
rupt Service Routine. Incrementing the TMR1 register
pair to overflow triggers the interrupt and calls the rou-
tine, which increments the seconds counter by one;
additional counters for minutes and hours are
incremented as the previous counter overflow.
Since the register pair is 16-bits wide, counting up to
overflow the register directly from a 32.768 kHz clock
would take 2 seconds. To force the overflow at the
required one-second intervals, it is necessary to pre-
load it; the simplest method is to set the MSbit of
TMR1H with a BSF instruction. Note that the TMR1L
register is never pre-loaded or altered; doing so may
introduce cumulative error over many cycles.
For this method to be accurate, Timer1 must operate in
Asynchronous mode, and the Timer1 overflow interrupt
must be enabled (PIE1<0> = 1), as shown in the rou-
tine, RTCinit. The Timer1 oscillator must also be
enabled and running at all times.
Using Timer1 as a Real-Time
Clock
2003 Microchip Technology Inc.