GM82C803CN Datasheet, PDF (70/84 Pages) List of Unclassifed Manufacturers – 2.88 MB FDC/ Dual UARTs with FIFO/PIO(EPP/ ECP)/ IDE Interface/ S-IR/ PnP

GM82C803CN
5-3. AC Electrical Characteristics (Ta = 0 to + 70 , Vdd = +5V 5%)
Symbol
Parameter
Condition
Min Max Units
CPU INTERFACE
tAR Delay from Address to IOR
19
ns
tAW Delay from Address to IOW
19
ns
tCH Duration of Clock High Pulse
External Clock (5M)
90
ns
tCL Duration of Clock Low Pulse
External Clock (5M)
90
ns
tDH Data Hold Time
10
ns
tDS Data Setup Time
19
ns
tHZ IOR to Floating Data Delay
(Note1)
13
25
ns
tMR Master Reset Pulse Width
100
ns
tRA Address Hold Time from IOR
0
ns
tRC Read Cycle Update
36
ns
tRD IOR Strobe Width
60
ns
tRVD Delay from IOR to Data
40
ns
tWA Address Hold Time from IOW
0
ns
tWC Write Cycle Update
36
ns
tWR WR Strobe Width
60
ns
RC
Read Cycle = tAR+tRD+tRC
115
ns
WC Write Cycle = tAW+tWR+tWC
115
ns
Note 1: Charge and discharge time is determined by VOL, VOH and the external loading.
Note2 : All AC timings can be met with current loads that don't exceed 3.2 mA or -80uA at 100pF capacitive loading.
Note3 : For capacitive loads that exceed 100 pF, the following typical derating factors should be used:
100 pF < Cl 150 pF, t=(0.1ns/pF) (Cl-100 pF) typical
150 pF < Cl 200 pF, t=(0.08ns/pF) (Cl-100 pF) and
t = (0.5ns/mA) (Isink mA) or
t = -(0.5ns/mA) (Isource mA)
Isource is always negative, Isink 4.8mA, Isource -120uA, Cl 250 pF