PIC18F6310-I/PT Microchip Technology, PIC18F6310-I/PT Datasheet - Page 93

• Manufacturer Part Number: PIC18F6310-I/PT
• Description: IC PIC MCU FLASH 4KX16 64TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F6310-I/PT

• Program Memory Type: FLASH
• Program Memory Size: 8KB (4K x 16)
• Package / Case: 64-TFQFP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 54
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: SPI/I2C/EUSART/AUSART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 54
• Number Of Timers: 4
• Operating Supply Voltage: 4.2 V to 5.5 V
• 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, DM183032
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT64PT5 - SOCKET TRAN ICE 64MQFP/TQFPAC164319 - MODULE SKT MPLAB PM3 64TQFPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

7.2
In 16-bit mode, the external memory interface can be
connected to external memories in three different
configurations:
• 16-bit Byte Write
• 16-bit Word Write
• 16-bit Byte Select
The configuration to be used is determined by the
WM1:WM0
(MEMCON<1:0>). These three different configurations
allow the designer maximum flexibility in using both
8-bit and 16-bit devices with 16-bit data.
For all 16-bit modes, the Address Latch Enable (ALE)
pin indicates that the address bits, A<15:0>, are avail-
able on the external memory interface bus. Following the
address latch, the Output Enable signal (OE) will enable
both bytes of program memory at once to form a 16-bit
instruction word. The Chip Enable signal (CE) is active
FIGURE 7-1:
 2004 Microchip Technology Inc.
Note 1: This signal only applies to table writes. See Section 6.1 “Table Reads and Table Writes”.
PIC18F8410
16-Bit Mode
AD<15:8>
A<19:16>
bits
AD<7:0>
WRH
WRL
ALE
CE
OE
in
16-BIT BYTE WRITE MODE EXAMPLE
the
MEMCON
PIC18F6310/6410/8310/8410
register
373
373
Preliminary
D<7:0>
A<19:0>
D<15:8>
at any time that the microcontroller accesses external
memory, whether reading or writing; it is inactive
(asserted high) whenever the device is in Sleep mode.
In Byte Select mode, JEDEC standard Flash memories
will require BA0 for the byte address line and one I/O line
to select between Byte and Word mode. The other 16-bit
modes do not need BA0. JEDEC standard static RAM
memories will use the UB or LB signals for byte selection.
7.2.1
Figure 7-1 shows an example of 16-bit Byte Write
mode for PIC18F8310/8410 devices. This mode is
used for two separate 8-bit memories connected for
16-bit operation. This generally includes basic EPROM
and Flash devices. It allows table writes to byte-wide
external memories.
During a TBLWT instruction cycle, the TABLAT data is
presented on the upper and lower bytes of the
AD15:AD0 bus. The appropriate WRH or WRL control
line is strobed on the LSb of the TBLPTR.
16-BIT BYTE WRITE MODE
A<x:0>
D<7:0>
CE
OE
(MSB)
WR
(1)
Address Bus
Data Bus
Control Lines
D<7:0>
DS39635A-page 91
A<x:0>
D<7:0>
CE
OE
(LSB)
WR
(1)