80C196NU Intel Corporation, 80C196NU Datasheet - Page 38

• Manufacturer Part Number: 80C196NU
• Description: COMMERCIAL CHMOS MICROCONTROLLER
• Manufacturer: Intel Corporation

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8XC196NU COMMERCIAL CHMOS 16-BIT MICROCONTROLLER
34
6.2.5
T
T
T
T
T
T
T
T
T
Symbol
HVCH
CLHAL
CLBRL
HALAZ
HALBZ
CLHAH
CLBRH
HAHAX
HAHBV
INST, RD#, WR#
A19:0, AD15:0
WRL#, WRH#
CS x #, BHE#,
HOLD#, HLDA# TIMINGS
CLKOUT
BREQ#
HOLD#
HLDA#
HOLD# Setup Time (To guarantee recognition at next clock)
CLKOUT Low to HLDA# Low
CLKOUT Low to BREQ# Low
HLDA# Low to Address Float
HLDA# Low to BHE#, INST, RD#, WR# Weakly Driven
CLKOUT Low to HLDA# High
CLKOUT Low to BREQ# High
HLDA# High to Address No Longer Float
HLDA# High to BHE#, INST, RD#, WR# Valid
ALE
Figure 12. HOLD#, HLDA# Timing Diagram
T
HVCH
Table 16. HOLD#, HLDA# Timings
T
Parameter
T
CLBRL
T
T
CLHAL
HALAZ
HALBZ
Hold Latency
Weakly held inactive
T
HVCH
T
T
T
T
CLHAH
CLBRH
HAHAX
HAHBV
T
CLLH
Start of strongly driven ALE
Min
–15
–15
–25
–25
–20
–20
65
PRELIMINARY
Max
15
15
33
25
15
25
A2460-03
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns