UPD78P324 Datasheet, PDF (37/80 Pages) NEC – 16-/8-Bit Single-Chip Microcomputers

µPD78P324, 78P324(A)
(2) µPD78P324(A) Electrical Specifications (6/9)
tCYK-dependent Bus Timing Definition
Symbol
tSAST
tHSTA
tDAR
tDAID
tDRID
tDSTR
tDRA
tWRL
tWSTH
tDAW
tDSTOD
tDSTW
tSODW
tHWOD
tDWST
tWWL
Calculation formula
0.5T–30
0.5T–30
T–40
(2.5+n) T–90
(1.5+n) T–75
0.5T–20
0.5T–12
(1.5+n) T–40
0.5T–25
T–40
0.5T+40
0.5T–20
1.5T–40
0.5T–30
0.5T–20
(1.5+n) T–40
MIN./MAX.
MIN.
MIN.
MIN.
MAX.
MAX.
MIN.
MIN.
MIN.
MIN.
MIN.
MAX.
MIN.
MIN.
MIN.
MIN.
MIN.
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Remarks
1. T = tCYK = 1/fCLK (fCLK refers to the internal system clock frequency)
2. n refers to the count of weight cycles defined by the user software.
3. Among the parameters for bus timing, only those listed in this table are dependent on tCYK.
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