PIC18F2455-I/SP Microchip Technology Inc., PIC18F2455-I/SP Datasheet - Page 13

• Manufacturer Part Number: PIC18F2455-I/SP
• Description: Microcontroller; 24 KB Flash; 2048 RAM; 256 EEPROM; 24 I/O; 28-Pin-SPDIP
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F2455-I/SP

• A/d Inputs: 10-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 12 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 23
• Interface: I2C/SPI/USART/USB
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SPDIP
• Programmable Memory: 24K Bytes
• Ram Size: 2K Bytes
• Speed: 48 MHz
• Timers: 1-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

FIGURE 1-2:
© 2006 Microchip Technology Inc.
Note 1:
V
OSC1
OSC2
T1OSI
T1OSO
ICPGC
ICPGD
ICPORTS
ICRST
MCLR
V
DD
USB
2:
3:
HLVD
BOR
,
V
Instruction Bus <16>
(1)
Program Memory
SS
(2)
(2)
RE3 is multiplexed with MCLR and is only available when the MCLR Resets are disabled.
OSC1/CLKI and OSC2/CLKO are only available in select oscillator modes and when these pins are not being used as digital I/O. Refer
to Section 2.0 “Oscillator Configurations” for additional information.
These pins are only available on 44-pin TQFP under certain conditions. Refer to Section 18.9 “Special ICPORT Features (Designated
Packages Only)” for additional information.
(3)
Table Pointer<21>
(3)
(3)
Address Latch
(24/32 Kbytes)
Data Latch
inc/dec logic
(3)
CCP1
21
Single-Supply
Programming
PIC18F4450 (40/44-PIN) BLOCK DIAGRAM
Debugger
Timer0
Oscillator
Oscillator
In-Circuit
Internal
20
8
INTRC
Block
ROM Latch
Table Latch
Instruction
Decode &
USB Voltage
Control
PCLATU
Regulator
PCU
EUSART
Program Counter
IR
31 Level Stack
STKPTR
PCH
PCLATH
Start-up Timer
Clock Monitor
Watchdog
Brown-out
Power-up
Power-on
Oscillator
Fail-Safe
8
Reset
Reset
State Machine
Control Signals
Timer
Timer
Timer1
PCL
Data Bus<8>
Advance Information
8
10-bit
ADC
Band Gap
Reference
BITOP
BSR
4
3
8
Data Address<12>
Address
inc/dec
Decode
Address Latch
FSR0
FSR1
FSR2
Data Memory
logic
Data Latch
PRODH
(2 Kbytes)
Timer2
8
ALU<8>
8 x 8 Multiply
12
W
8
12
Access
8
Bank
PRODL
PIC18F2450/4450
4
12
8
8
8
8
USB
PORTB
PORTC
PORTD
PORTE
PORTA
RA0/AN0
RA1/AN1
RA2/AN2/V
RA3/AN3/V
RA4/T0CKI/RCV
RA5/AN4/HLVDIN
OSC2/CLKO/RA6
RB0/AN12/INT0
RB1/AN10/INT1
RB2/AN8/INT2/VMO
RB3/AN9/VPO
RB4/AN11/KBI0
RB5/KBI1/PGM
RB6/KBI2/PGC
RB7/KBI3/PGD
RC0/T1OSO/T1CKI
RC1/T1OSI/UOE
RC2/CCP1
RC4/D-/VM
RC5/D+/VP
RC6/TX/CK
RC7/RX/DT
RE0/AN5
RE1/AN6
RE2/AN7
MCLR/V
RD0
RD1
RD2
RD3
RD4
RD5
RD6
RD7
DS39760A-page 11
PP
/RE3
REF
REF
-
+
(1)