PIC18F1230 MICROCHIP [Microchip Technology], PIC18F1230 Datasheet - Page 12

• Manufacturer Part Number: PIC18F1230
• Description: 18/20/28-Pin, Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F1230/1330
FIGURE 1-1:
DS39758B-page 10
Note 1:
Program Memory
Address Latch
PIC18F1230
PIC18F1330
(4 Kbytes)
Data Latch
(8 Kbytes)
V
MCLR
OSC1
OSC2
DD
T1OSO
T1OSI
2:
3:
4:
Timer0
, V
16
21
(2)
(2)
SS
(1)
RA5 is available only when the MCLR Reset is disabled.
OSC1, OSC2, CLKI and 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.
Placement of T1OSI and T1OSO/T1CKI depends on the value of the Configuration bit, T1OSCMX, of CONFIG3H.
Placement of FLTA depends on the value of the Configuration bit, FLTAMX, of CONFIG3H.
Data EEPROM
21
Generation
21
Programming
Oscillator
Low-Voltage
PIC18F1230/1330 (18-PIN) BLOCK DIAGRAM
Table Latch
Timing
INTRC
Debugger
Instruction
In-Circuit
Decode &
Control
Table Pointer <2>
inc/dec logic
Timer1
8
20
Start-up Timer
Clock Monitor
PCLATU
ROM Latch
Instruction
Watchdog
Brown-out
Power-on
Power-up
Oscillator
Fail-Safe
Register
PCU
Reset
Timer
Program Counter
Timer
Reset
A/D Converter
31 Level Stack
8
10-Bit
PCLATH
PCH PCL
Advance Information
8
PCPWM
8
Reference
Precision
Voltage
Decode
BIT OP
8
4
BSR
8
3
Address Latch
Address<12>
12
PRODH
inc/dec
8
Data Latch
Data RAM
FSR0
FSR1
FSR2
WREG
logic
8 x 8 Multiply
Enhanced
ALU<8>
USART
8
BOR
LVD
Data Bus<8>
12
8
Bank0, F
PRODL
4
12
8
8
8
PORTB
PORTA
© 2006 Microchip Technology Inc.
RA6/OSC2
T1OSO
RA7/OSC1
RA0/AN0/INT0/KBI0/CMP0
RA1/AN1/INT1/KBI1
RA2/TX/CK
RA3/RX/DT
RA4/T0CKI/AN2/V
MCLR/V
T1OSI
RB0/PWM0
RB1/PWM1
RB2/INT2/KBI2/CMP2/
T1OSO
RB3/INT3/KBI3/CMP1/
T1OSI
RB4/PWM2
RB5/PWM3
RB6/PWM4/PGC
RB7/PWM5/PGD
(3)
(3)
(3)
(3)
PP
/FLTA
/T1CKI
/T1CKI
/RA5
(2)
(2)
/CLKI
/CLKO
(4)
(1)
(3)
(3)
/FLTA
(2)
REF
/AN3
(2)
/
/
+
(4)