PIC16F677T-E/SS Microchip Technology, PIC16F677T-E/SS Datasheet - Page 119

• Manufacturer Part Number: PIC16F677T-E/SS
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SSOP,20PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F677T-E/SS

• Rohs Compliant: YES
• Mfg Application Notes: Intro to Capacitive Sensing Appl Notes Layout and Physical Design Appl Note
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 18
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SSOP
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: SSP
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 18
• Number Of Timers: 2
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 125 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, DM164120-4
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 12 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20SS1-1 - SOCKET TRANSITION 20DIP 20SSOPDM164125 - BOARD DEMO PICDEM TOUCH SENSE 1AC162061 - HEADER INTRFC MPLAB ICD2 20PIN
• Lead Free Status / Rohs Status: Details

FIGURE 9-4:
FIGURE 9-5:
© 2008 Microchip Technology Inc.
Note 1: The reference voltage (V
2: The charge holding capacitor (C
3: The maximum recommended impedance for analog sources is 10 kΩ. This is required to meet the pin
Legend: C
leakage specification.
Note 1: See Section 17.0 “Electrical Specifications”.
V
I
R
SS
C
V
LEAKAGE
T
PIN
IC
HOLD
SS
ANALOG INPUT MODEL
ADC TRANSFER FUNCTION
/V
REF
3FDh
3FCh
3FBh
3FFh
3FEh
VA
004h
003h
002h
001h
000h
-
= Input Capacitance
= Threshold Voltage
= Leakage current at the pin due to
= Interconnect Resistance
= Sampling Switch
= Sample/Hold Capacitance
Rs
various junctions
PIC16F631/677/685/687/689/690
ANx
C
5 pF
REF
PIN
) has no effect on the equation, since it cancels itself out.
1 LSB ideal
Zero-Scale
Transition
HOLD
Full-Scale Range
) is not discharged after each conversion.
V
DD
V
V
T
T
= 0.6V
= 0.6V
I
V
R
LEAKAGE
DD
IC
/V
≤ 1k
REF
(1)
+
Full-Scale
Transition
1 LSB ideal
Analog Input Voltage
V
SS Rss
DD
Sampling
Switch
6V
5V
4V
3V
2V
Sampling Switch
5 6 7 8 9 10 11
C
V
(kΩ)
HOLD
SS
R
/V
SS
REF
DS41262E-page 117
= 10 pF
-