PIC16C771/JW Microchip Technology, PIC16C771/JW Datasheet - Page 95

• Manufacturer Part Number: PIC16C771/JW
• Description: IC MCU EPROM4KX14 A/D PWM 20CDIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C771/JW

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: EPROM, UV
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 6x12b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-CDIP (0.300", 7.62mm) Window
• For Use With: ISPICR1 - ADAPTER IN-CIRCUIT PROGRAMMINGDVA16XP200 - ADAPTER ICE 20DIP/SOIC/SSOPAC164028 - MODULE SKT PROMATEII 20SOIC/DIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: Q1066306

9.2.16
Clock arbitration occurs when the master, during any
receive, transmit or repeated START/STOP condition,
de-asserts 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
FIGURE 9-22:
BRG overflow,
Release SCL,
If SCL = 1 Load BRG with
SSPADD<6:0>, and start count
to measure high time interval
2002 Microchip Technology Inc.
SCL
SDA
CLOCK ARBITRATION
CLOCK ARBITRATION TIMING IN MASTER TRANSMIT MODE
T
BRG
BRG overflow occurs,
Release SCL, Slave device holds SCL low.
T
BRG
Advance Information
SCL line sampled once every machine cycle (Tosc
Hold off BRG until SCL is sampled high.
SCL pin is actually sampled high. When the 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 9-22).
PIC16C717/770/771
T
BRG
SCL = 1 BRG starts counting
clock high interval.
DS41120B-page 93
4).