DV164136 Microchip Technology, DV164136 Datasheet - Page 103

• Manufacturer Part Number: DV164136
• Description: DEVELOPMENT KIT FOR PIC18
• Manufacturer: Microchip Technology
• Series: PIC®r
• Type: MCUr

Specifications of DV164136

• Contents: Board, Cables, CDs, PICkit™ 3 Programmer, Power Supply
• Processor To Be Evaluated: PIC18F8722, PIC18F87J11
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3.3 V, 5 V
• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC18
• Silicon Core Number: PIC18F
• Silicon Family Name: PIC18F8xxx
• Kit Contents: PIC18 Exp Brd PICkit 3 Cable CD PSU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: PIC18F8722, PIC18F87J11
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

7.6.1
Figure 7-1 shows an example of 16-Bit Byte Write
mode for PIC18F87J11 Family 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.
FIGURE 7-1:
© 2009 Microchip Technology Inc.
Note 1:
PIC18F87J11
2:
16-BIT BYTE WRITE MODE
A<19:16>
AD<15:8>
AD<7:0>
Upper order address lines are used only for 20-bit address widths.
This signal only applies to table writes. See Section 6.1 “Table Reads and Table Writes”.
WRH
WRL
ALE
CE
OE
(1)
16-BIT BYTE WRITE MODE EXAMPLE
373
373
D<7:0>
A<19:0>
D<15:8>
PIC18F87J11 FAMILY
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.
A<x:0>
D<7:0>
CE
OE
(MSB)
WR
(2)
Address Bus
Data Bus
Control Lines
D<7:0>
DS39778D-page 103
OE
A<x:0>
D<7:0>
CE
(LSB)
WR
(2)