PIC18F452-E/PT Microchip Technology, PIC18F452-E/PT Datasheet - Page 273

• Manufacturer Part Number: PIC18F452-E/PT
• Description: IC MCU CMOS 40MHZ 16K FLSH44TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F452-E/PT

• 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): 4.2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-TQFP, 44-VQFP
• 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
• Package: 44TQFP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 34
• Interface Type: I2C/SPI/USART
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

22.3.3
FIGURE 22-5:
TABLE 22-4:
© 2006 Microchip Technology Inc.
1A
1
2
3
4
Note 1: Instruction cycle period (T
Param.
No.
OSC1
CLKO
except PLL. All specified values are based on characterization data for that particular oscillator type under
standard operating conditions with the device executing code. Exceeding these specified limits may result in
an unstable oscillator operation and/or higher than expected current consumption. All devices are tested to
operate at “min.” values with an external clock applied to the OSC1/CLKI pin. When an external clock input
is used, the “max.” cycle time limit is “DC” (no clock) for all devices.
F
T
T
TosL,
TosH
TosR,
TosF
TIMING DIAGRAMS AND SPECIFICATIONS
Symbol
OSC
CY
OSC
EXTERNAL CLOCK TIMING REQUIREMENTS
EXTERNAL CLOCK TIMING (ALL MODES EXCEPT PLL)
External CLKI Frequency
Oscillator Frequency
External CLKI Period
Oscillator Period
Instruction Cycle Time
External Clock in (OSC1)
High or Low Time
External Clock in (OSC1)
Rise or Fall Time
Q4
Characteristic
CY
) equals four times the input oscillator time-base period for all configurations
(1)
Q1
1
(1)
(1)
(1)
(1)
Q2
Min
250
250
100
160
100
160
DC
DC
DC
0.1
2.5
25
40
40
25
30
10
—
—
—
4
4
4
5
2
3
10,000
Max
6.25
200
250
250
250
7.5
40
25
25
10
20
50
—
—
—
—
—
—
—
—
—
Q3
4
4
3
Units
MHz
MHz
MHz
MHz
MHz
MHz
MHz
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
s
Q4
4
EC, ECIO, -40 C to +85 C
EC, ECIO, +85 C to +125 C
RC osc
XT osc
HS osc
HS + PLL osc, -40 C to +85 C
HS + PLL osc, +85 C to +125 C
LP Osc mode
EC, ECIO, -40 C to +85 C
EC, ECIO, +85 C to +125 C
RC osc
XT osc
HS osc
HS + PLL osc, -40 C to +85 C
HS + PLL osc, +85 C to +125 C
LP osc
T
T
XT osc
LP osc
HS osc
XT osc
LP osc
HS osc
CY
CY
PIC18FXX2
= 4/F
= 4/F
4
OSC
OSC
Conditions
, -40 C to +85 C
, +85 C to +125 C
DS39564C-page 271
Q1