PIC18F86J50-I/PT Microchip Technology, PIC18F86J50-I/PT Datasheet - Page 72

• Manufacturer Part Number: PIC18F86J50-I/PT
• Description: IC PIC MCU FLASH 32KX16 80TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F86J50-I/PT

• Core Size: 8-Bit
• Program Memory Size: 64KB (32K x 16)
• Oscillator Type: Internal
• Core Processor: PIC
• Speed: 48MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 65
• Program Memory Type: FLASH
• Ram Size: 3.8K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 12x10b
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TFQFP
• Controller Family/series: PIC18
• No. Of I/o's: 65
• Ram Memory Size: 3904Byte
• Cpu Speed: 48MHz
• No. Of Timers: 5
• No. Of: RoHS Compliant
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3904 B
• Interface Type: I2C, MSSP, SPI, EUSART
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 65
• Number Of Timers: 5
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DV164136, DM183022, DM183032
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 12 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC162087 - HEADER MPLAB ICD2 18F87J50 68/84MA180021 - MODULE PLUG-IN 18F87J50 FS USBAC164328 - MODULE SKT FOR 80TQFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

PIC18F87J50 FAMILY
5.1.4
By default, devices in Extended Microcontroller mode
directly present the program counter value on the
external address bus for those addresses in the range
of the external memory space. In practical terms, this
means addresses in the external memory device below
the top of on-chip memory are unavailable.
FIGURE 5-3:
TABLE 5-2:
DS39775C-page 72
Microcontroller
Extended Microcontroller
On-Chip
Program
Memory
On-Chip
Memory
Legend:
Note 1:
Reads
Space
Microcontroller Mode
‘0’s
Operating Mode
2:
3:
000000h
(Top of Memory)
(Top of Memory) + 1
1FFFFFh
EXTENDED MICROCONTROLLER
MODE AND ADDRESS SHIFTING
(Top of Memory) represents upper boundary of on-chip program memory space (see Figure 5-1 for device-specific
values). Shaded areas represent unimplemented, or inaccessible areas, depending on the mode.
This mode is the only available mode on 64-pin devices and the default on 80-pin devices.
These modes are only available on 80-pin devices.
Addresses starting at the top of the program memory are translated to start at 0000h of the external device
whenever the EASHFT Configuration bit is set.
MEMORY ACCESS FOR PIC18F8XJ5X PROGRAM MEMORY MODES
MEMORY MAPS FOR PIC18F87J50 FAMILY PROGRAM MEMORY MODES
(1)
Execution
External
Memory
External
Memory
Access
From
Space
Yes
Yes
No
Extended Microcontroller Mode
Internal Program Memory
Table Read
On-Chip
On-Chip
Program
Memory
Memory
Mapped
External
Memory
Space
Space
From
Yes
Yes
to
000000h
(Top of Memory)
(Top of Memory) + 1
1FFFFFh
Table Write
Yes
Yes
To avoid this, the Extended Microcontroller mode
implements an address shifting option to enable auto-
matic address translation. In this mode, addresses
presented on the external bus are shifted down by the
size of the on-chip program memory and are remapped
to start at 0000h. This allows the complete use of the
external memory device’s memory space.
To
(2)
Execution
No Access
External
Memory
External
Memory
Space
From
Yes
Extended Microcontroller Mode
External Program Memory
with Address Shifting
© 2009 Microchip Technology Inc.
Program
On-Chip
On-Chip
Memory
Memory
Mapped
External
Memory
Table Read
Space
Space
No Access
to
From
Yes
000000h
(Top of Memory)
(Top of Memory) + 1
1FFFFFh –
1FFFFFh
(Top of Memory)
(2)
Table Write
No Access
Yes
To
(3)