PIC18F8520-I/PT Microchip Technology Inc., PIC18F8520-I/PT Datasheet - Page 186
PIC18F8520-I/PT
Manufacturer Part Number
PIC18F8520-I/PT
Description
80 PIN, 32 KB FLASH, 2048 RAM, 68 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F8520-IPT.pdf
(380 pages)
Specifications of PIC18F8520-I/PT
A/d Inputs
16-Channel, 10-Bit
Comparators
2
Cpu Speed
10 MIPS
Eeprom Memory
1024 Bytes
Input Output
68
Interface
I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
80-pin TQFP
Programmable Memory
32K Bytes
Ram Size
2K Bytes
Speed
40 MHz
Timers
2-8-bit, 3-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F8520-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
PIC18F8520-I/PT
Manufacturer:
MICRCOHI
Quantity:
20 000
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PIC18F6520/8520/6620/8620/6720/8720
17.4.7.1
Clock arbitration occurs when the master, during any
receive, transmit or Repeated Start/Stop condition,
deasserts the SCL pin (SCL allowed to float high).
When the SCL pin is allowed to float high, the Baud
Rate Generator (BRG) is suspended from counting
until the SCL pin is actually sampled high. When the
FIGURE 17-18:
DS39609B-page 184
Clock Arbitration
SDA
SCL
BRG
Value
BRG
Reload
BAUD RATE GENERATOR TIMING WITH CLOCK ARBITRATION
03h
DX
SCL deasserted but slave holds
SCL low (clock arbitration)
02h
SCL is sampled high, reload takes
place and BRG starts its count
01h
BRG decrements on
Q2 and Q4 cycles
00h (hold off)
DX-1
SCL pin is sampled high, the Baud Rate Generator is
reloaded with the contents of SSPADD<6:0> and
begins counting. This ensures that the SCL high time
will always be at least one BRG rollover count, in the
event that the clock is held low by an external device
(Figure 15-18).
SCL allowed to transition high
03h
2004 Microchip Technology Inc.
02h
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