PIC18F23K20 MICROCHIP [Microchip Technology], PIC18F23K20 Datasheet - Page 14

• Manufacturer Part Number: PIC18F23K20
• Description: 28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2XK20/4XK20
FIGURE 1-1:
DS41303G-page 14
CV
FVR
Note 1:
OSC1
OSC2
T1OSI
T1OSO
MCLR
V
DD
REF
,
Instruction Bus <16>
V
(8/16/32/64 Kbytes)
Table Pointer<21>
Program Memory
(2)
(3)
(3)
SS
Address Latch
2:
3:
Comparator
inc/dec logic
Data Latch
HLVD
BOR
CCP2 is multiplexed with RC1 when Configuration bit CCP2MX is set, or RB3 when CCP2MX is not set.
RE3 is only available when MCLR functionality is disabled.
OSC1/CLKIN and OSC2/CLKOUT 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 Module (With Fail-Safe Clock Monitor)” for additional information.
21
Single-Supply
Programming
20
Debugger
Oscillator
Oscillator
Oscillator
8
In-Circuit
LFINTOSC
Internal
16 MHz
EEPROM
Block
ECCP1
PIC18F2XK20 (28-PIN) BLOCK DIAGRAM
Data
PCLATU
Decode and
Table Latch
ROM Latch
Instruction
Control
PCU
IR
Program Counter
31-Level Stack
STKPTR
PCLATH
PCH
Timer0
CCP2
Start-up Timer
Clock Monitor
8
Brown-out
Watchdog
Power-up
Power-on
Oscillator
Fail-Safe
State machine
control signals
PCL
Timer
Reset
Timer
Reset
Data Bus<8>
8
Timer1
MSSP
BITOP
BSR
Band Gap
Reference
Precision
4
3
8
Data Address<12>
EUSART
Timer2
Address
Decode
Address Latch
Data Memory
FSR0
FSR1
FSR2
inc/dec
Data Latch
logic
PRODH
8
ALU<8>
8 x 8 Multiply
12
W
12
8
FVR
Access
8
Bank
PRODL
Timer3
10-bit
4
ADC
12
8
8
8
8
FVR
PORTB
PORTE
PORTA
PORTC
 2010 Microchip Technology Inc.
RB0/INT0/FLT0/AN12
RB1/INT1/AN10/C12IN3-
RB2/INT2/AN8
RB3/AN9/CCP2
RB4/KBI0/AN11
RB5/KBI1/PGM
RB6/KBI2/PGC
RB7/KBI3/PGD
RA0/AN0
RA1/AN1
RA2/AN2/V
RA3/AN3/V
RA4/T0CKI/C1OUT
RA5/AN4/SS/HLVDIN/C2OUT
OSC2/CLKOUT
OSC1/CLKIN
MCLR/V
RC0/T1OSO/T13CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
PP
/RE3
REF
REF
(3)
-/CV
+
/RA7
(3)
(1)
(2)
/RA6
/C12IN2-
(1)
REF