PIC12F1822-E/MF Microchip Technology, PIC12F1822-E/MF Datasheet - Page 264
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PIC12F1822-E/MF
Manufacturer Part Number
PIC12F1822-E/MF
Description
3.5 KB Flash, 128 Bytes RAM, 32 MHz Int. Osc, 6 I/0, Enhanced Mid Range Core 8 D
Manufacturer
Microchip Technology
Series
PIC® XLP™ 12Fr
Specifications of PIC12F1822-E/MF
Core Processor
PIC
Core Size
8-Bit
Speed
32MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
6
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)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
8-DFN
Processor Series
PIC12F
Core
PIC
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
ICE2000
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PIC12F/LF1822/PIC16F/LF1823
25.6.2
Clock arbitration occurs when the master, during any
receive, transmit or Repeated Start/Stop condition,
releases the SCL pin (SCL allowed to float high). When
the SCL pin is allowed to float high, the Baud Rate Gen-
erator (BRG) is suspended from counting until the SCL
pin is actually sampled high. When the SCL pin is sam-
pled high, the Baud Rate Generator is reloaded with
the contents of SSP1ADD<7:0> 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 25-25:
25.6.3
If the user writes the SSP1BUF when a Start, Restart,
Stop, Receive or Transmit sequence is in progress, the
WCOL is set and the contents of the buffer are
unchanged (the write does not occur). Any time the
WCOL bit is set it indicates that an action on SSP1BUF
was attempted while the module was not Idle.
DS41413B-page 264
Note:
CLOCK ARBITRATION
WCOL STATUS FLAG
Because queueing of events is not
allowed, writing to the lower 5 bits of
SSP1CON2 is disabled until the Start
condition is complete.
SDA
SCL
BRG
Value
BRG
Reload
BAUD RATE GENERATOR TIMING WITH CLOCK ARBITRATION
03h
(Figure
DX
SCL deasserted but slave holds
SCL low (clock arbitration)
02h
25-25).
SCL is sampled high, reload takes
place and BRG starts its count
01h
Preliminary
BRG decrements on
Q2 and Q4 cycles
00h (hold off)
DX ‚
–
1
SCL allowed to transition high
03h
2010 Microchip Technology Inc.
02h
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