UPD78P324 Datasheet, PDF (45/80 Pages) NEC – 16-/8-Bit Single-Chip Microcomputers

µPD78P324, 78P324(A)
(3) µPD78P324(A1) Electrical Specifications (5/9)
AC Characteristics (TA = –40 to +110 °C, VDD = +5 V ±10%, VSS = 0 V, CL = 100pF)
Non-serial Read/Write Operation (when connecting general-purpose memory)
Parameter
System clock cycle time
Address setup time (vs. ASTB ↓)
Address hold time (vs. ASTB ↓)
Address → RD ↓ delay time
RD ↓ → address float time
Address → data input time
RD ↓ → data input time
ASTB ↓ → RD ↓ delay time
Data hold time (vs. RD ↑)
RD ↑ → address active time
RD low-level width
ASTB high-level width
Address → WR ↓ delay time
ASTB ↓ → data output time
WR ↓ → data output time
ASTB ↓ → WR ↓ delay time
Data setup time (vs. WR ↑)
Data hold time (vs. WR ↑)
WR ↑ → ASTB ↑ delay time
WR low-level width
Symbol
tCYK
tSAST
tHSTA
tDAR
tFRA
tDAID
tDRID
tDSTR
tHRID
tDRA
tWRL
tWSTH
tDAW
tDSTOD
tDWOD
tDSTW
tSODW
tHWOD
tDWST
tWWL
Condition
MIN.
160
40
50
120
60
0
68
191
55
120
60
191
50
60
195
MAX.
250
10
310
165
120
40
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
45