PIC18LF452-I/ML Microchip Technology, PIC18LF452-I/ML Datasheet - Page 163

• Manufacturer Part Number: PIC18LF452-I/ML
• Description: IC MCU FLASH 16KX16 A/D 44QFN
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18LF452-I/ML

• Core Size: 8-Bit
• Program Memory Size: 32KB (16K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-QFN
• Controller Family/series: PIC18
• No. Of I/o's: 34
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 1.5KB
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FIGURE 15-27:
FIGURE 15-28:
© 2006 Microchip Technology Inc.
SDA
SCL
SEN
BCLIF
S
SSPIF
S
BCLIF
SSPIF
SDA
SCL
SEN
BUS COLLISION DURING START CONDITION (SCL = 0)
BRG RESET DUE TO SDA ARBITRATION DURING START CONDITION
'0'
'0'
SDA pulled low by other master.
Reset BRG and assert SDA.
SCL = 0 before BRG time-out,
bus collision occurs. Set BCLIF.
Set SEN, enable START
sequence if SDA = 1, SCL = 1
Less than T
BRG
SDA = 0, SCL = 1
SDA = 0, SCL = 1
SDA = 0, SCL = 1
Set SSPIF
T
Set SEN, enable START
sequence if SDA = 1, SCL = 1
BRG
S
Set S
T
BRG
T
BRG
Set SSPIF
SCL = 0 before SDA = 0,
bus collision occurs. set BCLIF
SCL pulled low after BRG
Time-out
Interrupt cleared
in software
Interrupts cleared
in software
'0'
'0'
PIC18FXX2
'0'
DS39564C-page 161