PIC18F67J11-IPT Datasheet, PDF (406/448 Pages) Microchip Technology – 64/80-Pin High-Performance, 1-Mbit Flash Microcontrollers with nanoWatt Technology

PIC18F87J11 FAMILY
FIGURE 27-7:
PROGRAM MEMORY WRITE TIMING DIAGRAM
Q1
Q2
Q3
Q4
OSC1
A<19:16>
BA0
AD<15:0>
ALE
CE
WRH or
WRL
UB or
LB
171A
Address
150
151
171
157
Address
166
Data
153
156
154
Operating Conditions: 2.0V < VCC < 3.6V, -40°C < TA < +125°C unless otherwise stated.
Q1
157A
Q2
Address
Address
TABLE 27-11: PROGRAM MEMORY WRITE TIMING REQUIREMENTS
Param.
No
Symbol
Characteristics
Min
Typ Max Units
150 TadV2alL Address Out Valid to ALE ↓ (address setup time)
151 TalL2adl ALE ↓ to Address Out Invalid (address hold time)
153 TwrH2adl WRn ↑ to Data Out Invalid (data hold time)
0.25 TCY – 10 —
5
—
5
—
—
ns
—
ns
—
ns
154 TwrL
WRn Pulse Width
0.5 TCY – 5 0.5 TCY —
ns
156 TadV2wrH Data Valid before WRn ↑ (data setup time)
0.5 TCY – 10
—
—
ns
157 TbsV2wrL Byte Select Valid before WRn ↓
(byte select setup time)
0.25 TCY
—
—
ns
157A TwrH2bsI WRn ↑ to Byte Select Invalid (byte select hold time) 0.125 TCY – 5 —
—
ns
166 TalH2alH ALE ↑ to ALE ↑ (cycle time)
—
TCY
—
ns
171 TalH2csL Chip Enable Active to ALE ↓
0.25 TCY – 20 —
—
ns
171A TubL2oeH AD Valid to Chip Enable Active
—
—
10
ns
DS39778D-page 406
© 2009 Microchip Technology Inc.