PIC16F872-I/SP Microchip Technology Inc., PIC16F872-I/SP Datasheet - Page 80

• Manufacturer Part Number: PIC16F872-I/SP
• Description: 28 PIN, 7 KB FLASH, 128 RAM, 22 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F872-I/SP

• A/d Inputs: 5-Channel, 10-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 64 Bytes
• Input Output: 22
• Interface: I2C/SPI
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SPDIP
• Programmable Memory: 3.5K Bytes
• Ram Size: 128 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC16F872
9.3
For standard mode I
resistors R
lowing parameters:
• Supply voltage
• Bus capacitance
• Number of connected devices
The supply voltage limits the minimum value of resistor
R
at V
example, with a supply voltage of V
FIGURE 9-27:
DS30221C-page 78
p
(input current + leakage current).
, due to the specified minimum sink current of 3 mA
OL
Note:
max = 0.4V, for the specified output stages. For
Connection Considerations for I
Bus
p
and R
I
2
also connected.
C devices with input levels related to V
s
in Figure 9-27 depend on the fol-
2
SAMPLE DEVICE CONFIGURATION FOR I
C bus devices, the values of
SDA
SCL
Rp
DD
= 5V+10% and
Rp
DD
2
Rs
C
must have one common supply line to which the pull-up resistor is
V
DD
DEVICE
Rs
+ 10%
V
1.7 k
Figure 9-27. The desired noise margin of 0.1 V
the low level limits the maximum value of R
resistors are optional and used to improve ESD
susceptibility.
The bus capacitance is the total capacitance of wire,
connections, and pins. This capacitance limits the max-
imum value of R
(Figure 9-27).
The SMP bit is the slew rate control enabled bit. This bit
is in the SSPSTAT register, and controls the slew rate
of the I/O pins when in I
OL
max = 0.4V at 3 mA, R
V
2
C BUS
DD
, as a function of R
p
, due to the specified rise time
C
b
2
© 2006 Microchip Technology Inc.
=10 - 400 pF
C mode (master or slave).
p min
= (5.5-0.4)/0.003 =
p
, is shown in
s
. Series
DD
for