PIC18C452-I/P Microchip Technology, PIC18C452-I/P Datasheet - Page 8

• Manufacturer Part Number: PIC18C452-I/P
• Description: IC MCU OTP 16KX16 A/D 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 18Cr

Specifications of PIC18C452-I/P

• Core Size: 8-Bit
• Program Memory Size: 32KB (16K x 16)
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Number Of I /o: 33
• Program Memory Type: OTP
• 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
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC18
• No. Of I/o's: 34
• Ram Memory Size: 1.5KB
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Processor Series: PIC18C
• 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: 1 x 16 bit
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: ICE2000, DM163022, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8
• Package: 40PDIP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: I3DB18C452 - BOARD DAUGHTER ICEPIC3444-1001 - DEMO BOARD FOR PICMICRO MCU
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

PIC18CXX2
5. Module: Interrupts
REGISTER 21-3:
FIGURE 1:
DS80058H-page 8
The operation of the GIE/GIEH bit (INTCON<7>) is
clarified as follows: when the bit is cleared, all
interrupts are disabled. This is regardless of the
state of the IPEN bit (RCON<7>), the priority of the
interrupt, or whether or not the interrupt is
unmasked. This varies from the original descrip-
tion, in which clearing the bit when IPEN = ’1’
would only disable high priority interrupts.
The seventh paragraph in Section 7.0 of the
Device Data Sheet (beginning “When an interrupt
is responded to....”) is amended by adding the fol-
lowing sentence to the end:
Low Priority Interrupt Generation
Peripheral Interrupt Enable bit
Peripheral Interrupt Priority bit
Peripheral Interrupt Flag bit
bit 7
TMR1IE
TMR1IP
TMR1IF
XXXXIF
XXXXIE
XXXXIP
INTERRUPT LOGIC (EXCERPT)
INTCON REGISTER (EXCERPT)
GIE/GIEH: Global Interrupt Enable bit
When IPEN (RCON<7>) = 0:
1 = Enables all unmasked interrupts
0 = Disables all interrupts
When IPEN (RCON<7>) = 1:
1 = Enables all high priority interrupts
0 = Disables all interrupts
Additional Peripheral Interrupts
TMR0IE
TMR0IP
TMR0IF
INT1IF
INT1IE
INT1IP
INT2IF
INT2IE
INT2IP
RBIF
RBIE
RBIP
“It is important to note, however, that clearing the
GIE/GIEH bit, regardless of the state of the IPEN
bit, will disable all interrupts.”
The changes to the bit descriptions in Register 7-1
in the Device Data Sheet are shown in the excerpt
below (changes in bold).
Also, the interrupt logic funnel shown in Figure 7-1
of the Device Data Sheet is amended with the
addition of a GIE/GIEH control line, as shown in
Figure 1 (new material in bold line).
 2002 Microchip Technology Inc.
GIEL/PEIE
GIE/GEIH
Interrupt to CPU
Vector to Location
0018h