PIC16F87-I/SS Microchip Technology, PIC16F87-I/SS Datasheet - Page 127

• Manufacturer Part Number: PIC16F87-I/SS
• Description: IC MCU FLASH 4KX14 EEPROM 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F87-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: 20MHz
• 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): 4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• 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: 10 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20SS-1 - SOCKET TRANSITION 18DIP 20SSOPAC164307 - MODULE SKT FOR PM3 28SSOP
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

13.7
When a comparator is active and the device is placed
in SLEEP mode, the comparator remains active and
the interrupt is functional, if enabled. This interrupt will
wake-up the device from SLEEP mode when enabled.
While the comparator is powered up, higher SLEEP
currents than shown in the power-down current
specification will occur. Each operational comparator
will consume additional current, as shown in the com-
parator specifications. To minimize power consumption
while in SLEEP mode, turn off the comparators,
CM<2:0> = 111, before entering SLEEP. If the device
wakes up from SLEEP, the contents of the CMCON
register are not affected.
13.8
A device RESET forces the CMCON register to its
RESET state, causing the comparator module to be in
the Comparator Off mode, CM<2:0> = 111.
FIGURE 13-4:
 2003 Microchip Technology Inc.
Comparator Operation During
SLEEP
Effects of a RESET
VA
Legend:
R
S
< 10K
ANALOG INPUT MODEL
C
V
I
R
R
VA
A
LEAKAGE
PIN
T
IC
S
IN
C
5 pF
PIN
= Input Capacitance
= Threshold Voltage
= Leakage Current at the pin due to various junctions
= Interconnect Resistance
= Source Impedance
= Analog Voltage
Preliminary
V
DD
V
V
T
T
= 0.6V
= 0.6V
13.9
A simplified circuit for an analog input is shown in
Figure 13-4. Since the analog pins are connected to a
digital output, they have reverse biased diodes to V
and V
V
range by more than 0.6V in either direction, one of the
diodes is forward biased and a latch-up condition may
occur. A maximum source impedance of 10 k
ommended for the analog sources. Any external com-
ponent connected to an analog input pin, such as a
capacitor or a Zener diode, should have very little
leakage current.
SS
and V
SS
. The analog input, therefore, must be between
Analog Input Connection
Considerations
I
±500 nA
V
LEAKAGE
DD
SS
. If the input voltage deviates from this
R
IC
PIC16F87/88
DS30487B-page 125
is rec-
DD