Microchip Technology MCU PIC PIC18F87K22-I/PTRSL TQFP-80 MCP PIC18F87K22-I/PTRSL 数据表
产品代码
PIC18F87K22-I/PTRSL
2011 Microchip Technology Inc.
DS39960D-page 507
PIC18F87K22 FAMILY
FIGURE 31-7:
PROGRAM MEMORY READ TIMING DIAGRAM
TABLE 31-11: CLKO AND I/O TIMING REQUIREMENTS
Param.
No
Symbol
Characteristics
Min
Typ Max
Units
150
TadV2alL
Address Out Valid to ALE
(address setup time)
0.25 T
CY
– 10
—
—
ns
151
TalL2adl
ALE
to Address Out Invalid
(address hold time)
5
—
—
ns
155
TalL2oeL
ALE
to OE
10
0.125 T
CY
—
ns
160
TadZ2oeL AD High-Z to OE
(bus release to OE)
0
—
—
ns
161
ToeH2adD OE
to AD Driven
0.125 T
CY
– 5
—
—
ns
162
TadV2oeH LS Data Valid before OE
(data setup time)
20
—
—
ns
163
ToeH2adl
OE
to Data In Invalid (data hold time)
0
—
—
ns
164
TalH2alL
ALE Pulse Width
—
0.25 T
CY
—
ns
165
ToeL2oeH OE Pulse Width
0.5 T
CY
– 5
0.5 T
CY
—
ns
166
TalH2alH
ALE
to ALE (cycle time)
—
T
CY
—
ns
167
Tacc
Address Valid to Data Valid
0.75 T
CY
– 25
—
—
ns
168
Toe
OE
to Data Valid
—
0.5 T
CY
– 25
ns
169
TalL2oeH
ALE
to OE
0.625 T
CY
– 10
—
0.625 T
CY
+ 10
ns
171
TalH2csL
Chip Enable Active to ALE
0.25 T
CY
– 20
—
—
ns
171A
TubL2oeH AD Valid to Chip Enable Active
—
—
10
ns
Q1
Q2
Q3
Q4
Q1
Q2
OSC1
ALE
OE
Address
Data from External
166
160
165
161
151
162
163
AD<15:0>
167
168
155
Address
Address
150
A<19:16>
Address
169
BA0
CE
171
171A
Operating Conditions: 2.0V < V
CC
< 3.6V, -40°C < T
A
< +125°C unless otherwise stated.
164