PIC18F8722-I/PT Microchip Technology Inc., PIC18F8722-I/PT Datasheet - Page 109

• 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

7.6.1
The presentation of control signals on the external
memory bus is different for the various operating
modes. Typical signal timing diagrams are shown in
Figure 7-8 through Figure 7-11.
FIGURE 7-8:
FIGURE 7-9:
 2004 Microchip Technology Inc.
A<19:16>
Note 1: The address lines actually used depends on the address width selected. This example assumes 20-bit addressing.
AD<15:8>,
Note 1: The address lines actually used depends on the address width selected. This example assumes 20-bit addressing.
Instruction
AD<15:8>
A<19:16>
Execution
AD<7:0>
Instruction
Memory
Execution
AD<7:0>
Memory
Cycle
WRH
WRL
BA0
ALE
Cycle
OE
ALE
(1)
8-BIT MODE TIMING
OE
CE
(1)
(1)
‘1’
‘1’
Q1
Q1
AAh
EXTERNAL BUS TIMING FOR TBLRD (MICROPROCESSOR MODE)
EXTERNAL BUS TIMING FOR TBLRD (EXTENDED MICROCONTROLLER MODE)
Opcode Fetch
from 007554h
INST(PC – 2)
Opcode Fetch
INST(PC – 2)
from 000100h
Q2
TBLRD *
Q2
TBLRD *
03Ah
08h
Q3
Q3
Q4
00h
Q4
Q1
Q1
ABh
TBLRD Cycle 1
Opcode Fetch
from 007556h
TBLRD Cycle 1
Opcode Fetch
from 000102h
MOVLW 55h
Q2
MOVLW 55h
Q2
Preliminary
03Ah
Q3
55h
Q3
Q4
0Eh
Q4
PIC18F8722 FAMILY
Q1
Q1
Table Read 92h
33h
from 199E67h
TBLRD Cycle 2
33h
from 199E67h
TBLRD Cycle 2
TBLRD 92h
Q2
Q2
CCFh
0Ch
CFh
Q3
Q3
92h
92h
Q4
Q4
Q1
Q1
ACh
Opcode Fetch
from 007558h
Opcode Fetch
from 000104h
ADDLW 55h
ADDLW 55h
Q2
Q2
MOVLW
MOVLW
03Ah
DS39646B-page 107
55h
Q3
Q3
Q4
0Fh
Q4
‘1’
‘1’