PIC18F85J50T-I/PT Microchip Technology, PIC18F85J50T-I/PT Datasheet - Page 71
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PIC18F85J50T-I/PT
Manufacturer Part Number
PIC18F85J50T-I/PT
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,64PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F65J50-IPT.pdf
(480 pages)
3.PIC18F65J50-IPT.pdf
(16 pages)
Specifications of PIC18F85J50T-I/PT
Core Processor
PIC
Core Size
8-Bit
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 Size
32KB (16K x 16)
Program Memory Type
FLASH
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
80-TFQFP
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, 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
Other names
PIC18F85J50T-I/PTTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F85J50T-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- Current page: 71 of 480
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5.1.3
The 80-pin devices in this family can address up to a
total of 2 Mbytes of program memory. This is achieved
through the External Memory Bus. There are two
distinct operating modes available to the controllers:
• Microcontroller (MC)
• Extended Microcontroller (EMC)
The program memory mode is determined by setting
the EMB Configuration bits (CONFIG3L<5:4>), as
shown in Register 5-1. (See also Section 25.1
“Configuration Bits” for additional details on the
device Configuration bits.)
The program memory modes operate as follows:
• The Microcontroller Mode accesses only on-chip
REGISTER 5-1:
© 2009 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5-4
bit 3
bit 2-0
Note 1:
Flash memory. Attempts to read above the top of
on-chip memory causes a read of all ‘0’s (a NOP
instruction).
R/WO-1
WAIT
(1)
Implemented only on 80-pin devices.
PIC18F87J50 FAMILY PROGRAM
MEMORY MODES
WAIT: External Bus Wait Enable bit
1 = Wait states on the external bus are disabled
0 = Wait states on the external bus are enabled and selected by MEMCON<5:4>
BW: Data Bus Width Select bit
1 = 16-Bit Data Width modes
0 = 8-Bit Data Width modes
EMB1:EMB0: External Memory Bus Configuration bits
11 = Microcontroller mode, external bus disabled
10 = Extended Microcontroller mode, 12-bit address width for external bus
01 = Extended Microcontroller mode, 16-bit address width for external bus
00 = Extended Microcontroller mode, 20-bit address width for external bus
EASHFT: External Address Bus Shift Enable bit
1 = Address shifting enabled – external address bus is shifted to start at 000000h
0 = Address shifting disabled – external address bus reflects the PC value
Unimplemented: Read as ‘0’
R/WO-1
BW
CONFIG3L: CONFIGURATION REGISTER 3 LOW
(1)
WO = Write-Once bit
‘1’ = Bit is set
R/WO-1
EMB1
(1)
(1)
R/WO-1
EMB0
(1)
(1)
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
EASHFT
PIC18F87J50 FAMILY
R/WO-1
• The Extended Microcontroller Mode allows
The setting of the EMB Configuration bits also controls
the address bus width of the External Memory Bus.
This is covered in more detail in Section 7.0 “External
Memory Bus”.
In all modes, the microcontroller has complete access
to data RAM.
Figure 5-3 compares the memory maps of the different
program memory modes. The differences between
on-chip and external memory access limitations are
more fully explained in Table 5-2.
(1)
The Microcontroller mode is also the only operating
mode available to 64-pin devices.
access to both internal and external program
memories as a single block. The device can
access its entire on-chip program memory; above
this, the device accesses external program
memory up to the 2-Mbyte program space limit.
Execution automatically switches between the
two memories as required.
(1)
(1)
U-0
—
x = Bit is unknown
U-0
—
DS39775C-page 71
U-0
—
bit 0
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