PIC18F8722-I/PT Microchip Technology Inc., PIC18F8722-I/PT Datasheet - Page 103

• Manufacturer Part Number: PIC18F8722-I/PT
• Description: 80 PIN, 128 KB FLASH, 4K RAM, 70 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F8722-I/PT

• A/d Inputs: 16-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 10 MIPS
• Eeprom Memory: 1024 Bytes
• Input Output: 70
• Interface: SPI/I2C/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 80-pin TQFP
• Programmable Memory: 128K Bytes
• Ram Size: 3.9K Bytes
• Speed: 40 MHz
• Timers: 2-8 bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

7.5.1
Figure 7-1 shows an example of 16-bit Byte Write
mode for PIC18F8527/8622/8627/8722 devices. This
mode is used for two separate 8-bit memories con-
nected for 16-bit operation. This generally includes
basic EPROM and Flash devices. It allows table writes
to byte-wide external memories.
FIGURE 7-1:
 2004 Microchip Technology Inc.
Note 1:
PIC18F8X27/8X22
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
Preliminary
D<7:0>
A<19:0>
D<15:8>
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.
PIC18F8722 FAMILY
A<x:0>
D<7:0>
CE
OE
(MSB)
WR
(2)
Address Bus
Data Bus
Control Lines
D<7:0>
DS39646B-page 101
A<x:0>
D<7:0>
CE
OE
(LSB)
WR
(2)