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PC87570 датащи(PDF) 143 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали PC87570
подробное описание детали  PC87570 Keyboard and Power Management Controller
PDF  168 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87570 датащи(HTML) 143 Page - National Semiconductor (TI)

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Device Specifications
www.national.com
1. K is the number of wait cycles added to the bus cycle. This number may be 0 or more.
2. In shared memory write operations, the actual write to memory is executed after HMEMWR is inactive. In case
reset or entering Idle mode occurs before the memory write cycle is completed it may be that the data will not be
written to memory.
3. n is the number of clock cycles, as programmed in the IDB field. See PS/2 Control Register in Section 12.5.3 on
page 95.
4. n is the number of clock cycles, as programmed in the IDB field. See PS/2 Control Register in Section 12.5.3 on
page 95.
5. Refer to Table 7-1 on page 76 for the definition of tCLKINTnom.
6. Depends on the signal capacitance and the pull-up value.
7. Assuming signal capacitance up to 400 pF.
tSDAvo
19-22 SDA valid time
After SCL FE
7 * tCLK +
tRD
7 * tCLK +
tRD
MFT16 Input Signals
tTAH
19-18 TA high time
tCLK + 5 ns
tCLK + 5 ns
tTAL
19-18 TA low time
tCLK + 5 ns
tCLK + 5 ns
tTBH
19-18 TB high time
tCLK + 5 ns
tCLK + 5 ns
tTBL
19-18 TB low time
tCLK + 5 ns
tCLK + 5 ns
ICU/Development Input Signals
tIs
19-24 Input setup time
ISE, PFAIL, EXINTn
Before RE CLK
15 ns
15 ns
tIh
19-24 Input hold time
ISE, PFAIL, EXINTn
After RE CLK
0
0
Development Output Signals
tPFSh
19-23 Output hold time
PFS, PLI
After RE CLK
0.5 * tCLK -
6 ns
0.5 * tCLK -
6 ns
tPFSv
19-23 Output active/inactive
time PFS, PLI
After RE CLK
0.5 * tCLK +
12 ns
0.5 * tCLK +
12 ns
Asynchronous Edge Detected Input Signals
tasw
19-24 Input width
EXINTn, HMEMRD,
HMEMWR, ISE,
KBSIN0-7, PFAIL
PSCLK1-3, PSDAT1-
3
15 ns
15 ns
Symbol Figure
Description
Reference
Conditions
VCC = 5 V 10%
VCC = 3.3 V ± 10%
Min
Max
Min
Max



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