PIC18F452-I/L Microchip Technology, PIC18F452-I/L Datasheet - Page 147

• Manufacturer Part Number: PIC18F452-I/L
• Description: IC MCU FLASH 16KX16 EE 44PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F452-I/L

• Program Memory Type: FLASH
• Program Memory Size: 32KB (16K x 16)
• Package / Case: 44-PLCC
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 34
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 1.5 KB
• Interface Type: MSSP/SPI/I2C/PSP/USART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 34
• Number Of Timers: 4
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DV164136, DM163022
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Package: 44PLCC
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164309 - MODULE SKT FOR PM3 44PLCCXLT44L2 - SOCKET TRAN ICE 44PLCC444-1001 - DEMO BOARD FOR PICMICRO MCUDVA16XL441 - ADAPTER DEVICE ICE 44PLCCDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: PIC18F452I/L

15.4.4.5
If a user clears the CKP bit, the SCL output is forced to
‘0’. Setting the CKP bit will not assert the SCL output
low until the SCL output is already sampled low. If the
user attempts to drive SCL low, the CKP bit will not
assert the SCL line until an external I
has already asserted the SCL line. The SCL output will
remain low until the CKP bit is set, and all other
devices on the I
ensures that a write to the CKP bit will not violate the
minimum high time requirement for SCL (see
Figure 15-12).
FIGURE 15-12:
2002 Microchip Technology Inc.
WR
SSPCON
SDA
SCL
CKP
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
Clock Synchronization and
the CKP bit
2
C bus have de-asserted SCL. This
CLOCK SYNCHRONIZATION TIMING
DX
2
C master device
Master device
asserts clock
Master device
de-asserts clock
PIC18FXX2
DS39564B-page 145
DX-1