PIC18F6525_13 Datasheet, PDF (340/400 Pages) Microchip Technology – 64/80-Pin High-Performance, 64-Kbyte Enhanced Flash Microcontrollers with A/D

PIC18F6525/6621/8525/8621
Param
No.
Symbol
Characteristic
Min
Typ
22† TINP
INT pin High or Low Time
TCY
—
23† TRBP
RB7:RB4 Change INT High or Low Time
TCY
—
24† TRCP
RC7:RC4 Change INT High or Low Time
20
† These parameters are asynchronous events not related to any internal clock edges.
Note 1: Measurements are taken in RC mode, where CLKO output is 4 x TOSC.
Max
—
—
FIGURE 27-7:
PROGRAM MEMORY READ TIMING DIAGRAM
Units Conditions
ns
ns
ns
OSC1
A<19:16>
BA0
AD<15:0>
ALE
CE
Q1
Q2
Q3
Q4
Q1
Address
150
151
164
171
Address
160
155
167
166
168
Data from External
163
162
161
169
171A
OE
165
Operating Conditions: 2.0V < VCC < 5.5V, -40°C < TA < +125°C unless otherwise stated.
Q2
Address
Address
TABLE 27-9: PROGRAM MEMORY READ TIMING REQUIREMENTS
Param.
No
Symbol
Characteristics
Min
Typ
Max
Units
150 TadV2alL Address Out Valid to ALE (address
setup time)
0.25 TCY – 10
—
—
ns
151 TalL2adl ALE  to Address Out Invalid (address
hold time)
5
—
—
ns
155 TalL2oeL ALE to OE 
10
0.125 TCY
—
ns
160 TadZ2oeL AD high-Z to OE (bus release to OE)
0
—
—
ns
161 ToeH2adD OE  to AD Driven
0.125 TCY – 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 TCY
—
ns
165 ToeL2oeH OE Pulse Width
0.5 TCY – 5 0.5 TCY
—
ns
166 TalH2alH ALE  to ALE  (cycle time)
40 ns
TCY
—
ns
DS39612C-page 340
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