PIC18F85K22-I/PT Microchip Technology, PIC18F85K22-I/PT Datasheet - Page 313

• Manufacturer Part Number: PIC18F85K22-I/PT
• Description: IC, 8BIT MCU, PIC18F, 64MHZ, TQFP-80
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

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

21.4.7
In I
reload value is placed in the lower 7 bits of the
SSPxADD register
occurs to SSPxBUF, the Baud Rate Generator will
automatically begin counting. The BRG counts down to
0 and stops until another reload has taken place. The
BRG count is decremented twice per instruction cycle
(T
BRG is reloaded automatically.
Once the given operation is complete (i.e., transmis-
sion of the last data bit is followed by ACK), the internal
clock will automatically stop counting and the SCLx pin
will remain in its last state.
Table 21-3
instruction cycles and the BRG value loaded into
SSPxADD. The SSPxADD BRG value of 0x00 is not
supported.
FIGURE 21-19:
TABLE 21-3:
 2009-2011 Microchip Technology Inc.
Note 1:
CY
2
C Master mode, the Baud Rate Generator (BRG)
) on the Q2 and Q4 clocks. In I
40 MHz
40 MHz
40 MHz
16 MHz
16 MHz
16 MHz
16 MHz
4 MHz
4 MHz
F
OSC
A minimum of 16 MHz F
BAUD RATE
demonstrates clock rates based on
I
2
C™ CLOCK RATE w/BRG
(Figure
BAUD RATE GENERATOR BLOCK DIAGRAM
SSPM<3:0>
21-19). When a write
10 MHz
10 MHz
10 MHz
SCLx
4 MHz
4 MHz
4 MHz
1 MHz
1 MHz
4 MHz
F
2
CY
C Master mode, the
OSC
is required to get 1 MHz I
SSPM<3:0>
Reload
Control
CLKO
20 MHz
20 MHz
20 MHz
F
8 MHz
8 MHz
8 MHz
2 MHz
2 MHz
8 MHz
CY
* 2
Reload
PIC18F87K22 FAMILY
21.4.7.1
Because MSSP1 and MSSP2 are independent, they
can operate simultaneously in I
different baud rates. This is done by using different
BRG reload values for each module.
Because this mode derives its basic clock source from
the system clock, any changes to the clock will affect
both modules in the same proportion. It may be
possible to change one or both baud rates back to a
previous value by changing the BRG reload value.
BRG Down Counter
SSPxADD<6:0>
2
C.
BRG Value
Baud Rate and Module
Interdependence
0Ch
18h
1Fh
63h
09h
27h
02h
09h
03h
F
OSC
/4
(2 Rollovers of BRG)
2
C Master mode at
DS39960D-page 313
312.5 kHz
1 MHz
400 kHz
100 kHz
400 kHz
308 kHz
100 kHz
333 kHz
100 kHz
F
SCL
(1)