PC8477BV-1 National Semiconductor, PC8477BV-1 Datasheet - Page 45

• Manufacturer Part Number: PC8477BV-1
• Description: IC ADVANCED FLOPPY CTRLR 68PLCC
• Manufacturer: National Semiconductor
• Series: SuperFDC™r

Specifications of PC8477BV-1

• Controller Type: Floppy Disk Controller
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 68-LCC (J-Lead)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Supply: -
• Interface: -
• Other names: *PC8477BV-1

6 0 Device Description
6 2 8 Drive Control Timing
6 2 9 Read Data Timing
Symbol
t
t
t
t
t
t
DRV
DST
STD
STP
SRT
IW
Symbol
t
RDW
DR0–DR3 MTR0–MTR3 from End of WR
DIR Setup to STEP Active
DIR Hold from STEP Inactive
STEP Active High Pulse Width
STEP Rate Time (see Table 4-13)
Index Pulse Width
Read Data Pulse Width
Parameter
(Continued)
Parameter
FIGURE 6-7 Drive Control Timing
FIGURE 6-8 Read Data Timing
45
Min
50
t
Min
100
SRT
6
8
1
Max
Max
100
TL F 11332 – 22
TL F 11332 – 23
Units
ns
Units
ms
ms
ns
ns
s
s