PIC18F85K22-I/PT Microchip Technology, PIC18F85K22-I/PT Datasheet - Page 314
PIC18F85K22-I/PT
Manufacturer Part Number
PIC18F85K22-I/PT
Description
IC, 8BIT MCU, PIC18F, 64MHZ, TQFP-80
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheet
1.PIC18F85K22-IPT.pdf
(550 pages)
Specifications of PIC18F85K22-I/PT
Controller Family/series
PIC18
No. Of I/o's
69
Eeprom Memory Size
1KB
Ram Memory Size
2KB
Cpu Speed
64MHz
No. Of Timers
8
Core Size
8 Bit
Program Memory Size
32KB
Core Processor
PIC
Speed
64MHz
Connectivity
EBI/EMI, I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
69
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 24x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
80-TQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F85K22-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
PIC18F85K22-I/PT
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Company:
Part Number:
PIC18F85K22-I/PTRSL
Manufacturer:
Microchip Technology
Quantity:
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PIC18F87K22 FAMILY
21.4.7.2
Clock arbitration occurs when the master, during any
receive, transmit or Repeated Start/Stop condition,
deasserts the SCLx pin (SCLx allowed to float high).
When the SCLx pin is allowed to float high, the Baud
Rate Generator (BRG) is suspended from counting
until the SCLx pin is actually sampled high. When the
FIGURE 21-20:
DS39960D-page 314
Clock Arbitration
SDAx
SCLx
BRG
Value
BRG
Reload
BAUD RATE GENERATOR TIMING WITH CLOCK ARBITRATION
03h
DX
SCLx Deasserted but Slave Holds
SCLx Low (clock arbitration)
02h
SCLx is Sampled High, Reload takes
Place and BRG Starts its Count
01h
BRG Decrements on
Q2 and Q4 Cycles
00h (hold off)
SCLx pin is sampled high, the Baud Rate Generator is
reloaded with the contents of SSPxADD<6:0> and
begins counting. This ensures that the SCLx 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
DX – 1
21-20).
SCLx Allowed to Transition High
03h
2009-2011 Microchip Technology Inc.
02h
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