Seagate(希捷)ST-225 硬碟(HDD / Hard Disk Drive)控制板(Control Board)尺寸為 140 / 200mm × 83 / 138mm ×1.5mm,重量有 151g,雙面 AV-0板(Double Side PCB),PCB編號是 20302-001 REV P1380 CONTROL S-225 ASSY 20301 REV 014,生產時間 E88 14(估計在 1988年 第14周),生產廠商是 Seagate TECHNOLOGY,新加坡組裝(Assembled in Singapore)。
Seagate(希捷)ST-225 硬碟(HDD / Hard Disk Drive) |
Seagate(希捷)ST-225 硬碟(HDD / Hard Disk Drive)控制板(Control Board)的正面 |
Seagate(希捷)ST-225 硬碟(HDD / Hard Disk Drive)控制板(Control Board)的背面 |
SSI 280P S8814 DIP-28 封裝的 IC |
Rockwell(洛克威爾)80007-001 R10l7-11 DIP-40 封裝的 IC |
ST(意法半導體) 2N6039 和 Philips(飛利浦)BD436 三極管 |
Type
|
Brand
|
P/N
|
Packaging
|
?
|
ST
|
11642-001
|
DIP-20
|
?
|
Motorola
|
11665-001
|
DIP-16
|
?
|
SSI
|
280P S8814
|
DIP-28
|
PNP Silicon Quad Transistor
|
Fairchild
|
MPQ2907
|
DIP-14
|
?
|
Rockwell
|
80007-001 R10l7-11
|
DIP-40
|
?
|
?
|
11695-002
|
DIP-8
|
Dual-Peripheral Drivers for High-Current High-Speed Switching
|
TI
|
SN75453BP
|
DIP-8
|
Quadruple 2-Input Positive-AND Gates With Open-Collector
|
Fairchild
|
7409
|
DIP-14
|
BCD-to-Decimal Decoders/Drivers
|
?
|
7445
|
DIP-16
|
Hex Inverter with Schmitt Trigger Inputs
|
NS
|
DM74LS14N
|
DIP-14
|
Dual D Flip−Flop with Set and Reset
|
Philips
|
74HC74
|
DIP-14
|
Dual D Flip−Flop with Set and Reset
|
NS
|
DM74LS74AN
|
DIP-14
|
Quadruple 2-Input Positive-NAND Buffers with Open-Collector Outputs
|
?
|
7438N
|
DIP-14
|
Hex Inverter Buffers / Drivers with Hgh-Voltage Outputs
|
?
|
DM7406N
|
DIP-14
|
Quadruple 2-Input Positive-NAND Buffers with Open-Collector Outputs
|
?
|
7438N
|
DIP-14
|
Hex Inverter Buffers / Drivers with Hgh-Voltage Outputs
|
NS
|
DM7406N
|
DIP-14
|
Dual Retriggerable Monostable Multivibrators
|
TI
|
SN74123N
|
DIP-16
|
品牌型號:Seagate(希捷)硬碟(HDD / Hard Disk Drive)
型號:ST-225
Form Factor:5.25" × 1/2H / HH (Half Height)
Unformatted Capacity (MB):25.6
Formatted Capacity (17
Sectors) (MB):21.4
Actuator Type:Stepper
Tracks:2,460
Cylinders:615
Heads:4
Discs:2
Media Type:Oxide
Recording Method:MFM
Transfer Rate (mbits/sec):5.0
Spindle Speed:3,600rpm
Average Latency :8.3ms
Interface:ST412
Sectors Per Drive:41,820
TPI (Tracks Per Inch):588TPI
BPI (Bits Per Inch):9,827BPT
Average Access(Rd/Wt):65ms
Single Track Seek(Rd/Wt):20ms
Max Full Seek(Rd/Wt):150ms
MTBF (power-on hours):100,000
Power Requirements:+12V Start Up (Amps):2.4,+12V Typical (Amps):0.9,+5V Typical (Amps):0.8,Typical (watts):14.8,Maximum (watts) :33
Buffered Step Pulse Rate (micro sec):5-200
Write Precomp (cyl):300
Reduced Write Current (cyl):N/A (616)
Landing Zone (cyl):670
IBM AT Drive Type:2
2020年 5月 9日 天氣報告
氣溫:27.4度 @ 20:10
相對濕度:百分之 91%
天氣:大致多雲
I am reverse-engineering a very similar model, and found your page/blogpost here, thank you for this! Are you trying to recover data from one of these drives? Or do you have another motivation for documenting the circuit board this way?
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