titus-larsen-titus-1981-apple-interfacing

MCS6500
2MHETIM!NG
CLOOI: TIM!NG-MCS6512, 13, 14, 15, 16
Symbol Ctwaci:eristic Min lyp Ma• Unit
Tcvc Cycle Time 500 nsec
PWH ¢1 Clock Pulse Width ¢1 21S
PWH ¢2 (Measured at V cc - 0.2 V) ¢2 235 nsec
Tr Fall Time (Measured from 0.2 V to V cc - 0.2 V) 12 nsec
To Delay Time Between Clocks (Measured at 0.2 V) 0 nsec
CLOCK TIM!NG-MCS6502, 03, 04, 05, 06
Symbol Characteristic Min Typ Max Unit
Tcvc Cycle Time soo ns
PWH\(>0 \(>0 (IN) Pulse Width (measured at 1.5 V) 240 260 ns
TR¢0, TF0 ¢0 (JN) Rise, Fall Time 10 ns
To Delay Time Between Clocks (measured at 1.5 V) s
PWH\(>1 1 (OUT) Pulse Width (measured at 1.S V) PWHef>0t-20 PWHef>ot ns
PWHq,2 2 (OUT) Pulse Width (measured at 1.S V) PWHef>0H-40 PWHef>0H-10 ns
T,, T, ¢1 (OUTJ, 4'2 (OUT) Rise, Fall Time 2S
(measured .8 V to 2.0 V)
(Load = 30pF + 1 TIL)
ns
ns
!IEAD!WllITT TIMING
Symbol Omaderistic Min Typ Max Unit
T RWS Read/Write Setup Time From MCS6SOOA 100 150
TADS Address Setup Time From MCS6SOOA 100 1SO
TACC Memory Read Access Time 300
Tosu Data Stability Time Period
THR Data Hold Time - Read
THW Data Hold Time - Write
so
10
30
ns
ns
ns
ns
ns
60 ns
TMDS Data Setup Time From MCS6500A 7S 100
TROY RDY, S.0. Setup Time so
TsvNc SYNC Setup Time From MCS6SOOA 17S ns
THA Address Hold Time 30 60
THRW R/W Hold Time 30 60 ns
ns
ns
ns