PIC24FJ64GA002-I/SO Microchip Technology Inc., PIC24FJ64GA002-I/SO Datasheet - Page 26

• Manufacturer Part Number: PIC24FJ64GA002-I/SO
• Description: MCU, 16-Bit, 28-Pin, 64KB Flash, 8KB RAM, 21 I/O, Nanowatt
• Manufacturer: Microchip Technology Inc.

Specifications of PIC24FJ64GA002-I/SO

• A/d Inputs: 10 Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 16 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 21
• Interface: I2C/SPI/UART
• Memory Capacity: 64 Kbytes
• Memory Type: Flash
• Number Of Bits: 16
• Number Of Inputs: 21
• Number Of Pins: 28
• Package Type: 28-pin SOIC
• Programmable Memory: 64K Bytes
• Ram Size: 8K Bytes
• Speed: 32 MHz
• Timers: 5-16-bit
• Voltage, Range: 2-3.6 V
• Voltage, Rating: 2-3.6 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC24FJ64GA004 FAMILY
3.1.1
The
word-addressable blocks. Although it is treated as
24 bits wide, it is more appropriate to think of each
address of the program memory as a lower and upper
word, with the upper byte of the upper word being
unimplemented. The lower word always has an even
address, while the upper word has an odd address
(Figure 3-2).
Program memory addresses are always word-aligned
on the lower word, and addresses are incremented or
decremented by two during code execution. This
arrangement also provides compatibility with data
memory space addressing and makes it possible to
access data in the program memory space.
3.1.2
All PIC24F devices reserve the addresses between
00000h and 000200h for hard coded program execu-
tion vectors. A hardware Reset vector is provided to
redirect code execution from the default value of the
PC on device Reset to the actual start of code. A GOTO
instruction is programmed by the user at 000000h, with
the actual address for the start of code at 000002h.
PIC24F devices also have two interrupt vector tables,
located from 000004h to 0000FFh and 000100h to
0001FFh. These vector tables allow each of the many
device interrupt sources to be handled by separate
ISRs. A more detailed discussion of the interrupt vector
tables is provided in Section 6.1 “Interrupt Vector
Table”.
FIGURE 3-2:
DS39881B-page 24
program
Address
000001h
000003h
000005h
000007h
msw
PROGRAM MEMORY
ORGANIZATION
HARD MEMORY VECTORS
memory
Program Memory
PROGRAM MEMORY ORGANIZATION
‘Phantom’ Byte
(read as ‘0’)
00000000
00000000
00000000
00000000
space
most significant word
is
23
organized
Preliminary
in
16
Instruction Width
3.1.3
In PIC24FJ64GA004 family devices, the top two words
of on-chip program memory are reserved for configura-
tion information. On device Reset, the configuration
information is copied into the appropriate Configuration
registers. The addresses of the Flash Configuration
Word for devices in the PIC24FJ64GA004 family are
shown in Table 3-1. Their location in the memory map
is shown with the other memory vectors in Figure 3-1.
The Configuration Words in program memory are a
compact format. The actual Configuration bits are
mapped in several different registers in the configuration
memory space. Their order in the Flash Configuration
Words do not reflect a corresponding arrangement in the
configuration space. Additional details on the device
Configuration Words are provided in Section 23.1
“Configuration Bits”.
TABLE 3-1:
PIC24FJ16GA
PIC24FJ32GA
PIC24FJ48GA
PIC24FJ64GA
least significant word
Device
8
FLASH CONFIGURATION WORDS
FLASH CONFIGURATION
WORDS FOR PIC24FJ64GA004
FAMILY DEVICES
(K words)
Program
Memory
© 2007 Microchip Technology Inc.
5.5
11
16
22
0
(lsw Address)
PC Address
000000h
000002h
000004h
000006h
Configuration
Addresses
00ABFCh:
002BFCh:
0057FCh:
0083FCh:
002BFEh
00ABFEh
0057FEh
0083FEh
Word