本帖最后由 zdh30000 于 2012-8-3 11:03 编辑
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+-------+ J1
+5-------|RST | +5---o o o----+ +-----------+
+5--o----|/CLR1 | 10K | | | |
| | |-----o--/VVV\-- +5 +------|---|26 A13(+5V)|
+------+ | |1/2 123| | +--------|-->|27 /WE(NC) |
16 o-|/CS2 | | | |--||-+ | +------|-->|23 A11(/WE)|
| CS1|----o----|B1 | 100pF | | J2 | | |
| | | /Q1|---------->---------o o o | | ZIF28 |
| Y1|---------|/A1 | | | | socket |
| 138 | +-------+ _ 1/2 74HCT132 | | | for |
| | +5 --| \ __ | | | EEPROM |
| Y2|--------------------------| O--| \ | | | |
8 o-|A2 | +-------+ |_/ | O-----------|-->|22 /OE |
7 o-|A1 Y4|--------------->|EN Y7|-----o-|_/ | | | |
6 o-|A0 Y3|----+ +5-----|RST | | 180 ohm | | | |
| Y0|-+ | | Y6|-----|---/VVV\---|----|---|1 A14(NC) |
| /CS3| | | | 259 Y5|-----|-----------|----+ | |
+------+ | | | Y4|-----|-----------|------->|2 A12(NC) |
| | | | Y3|-----|-----------+ | |
5 o--->---|--|--|--------o--|D Y2|-----|------------------->|21 A10 |
4 o--->---|--|--|------o-|--|A2 Y1|-----|------------------->|24 A9 |
3 o--->---|--|--|----o-|-|--|A1 Y0|-----|------------------->|25 A8 |
2 o--->---|--|--|--o-|-|-|--|A0 | | | |
| | | | | | | +-------+ | +5------------|28 +5V(NC) |
| | | | | | | | | |
| | | | | | | +-------+ | | |
| | | | | | | | Y7|-----|------------o------>|3 A7 |
| | +---------->|EN |-----|-----------o|------>|4 A6 |
| | | | | | | |-----|----------o||------>|5 A5 |
| | | | | | | 259 |-----|---------o|||------>|6 A4 |
| | | | | | | |-----|--------o||||------>|7 A3 |
| | | | | | | |-----|-------o|||||------>|8 A2 |
| | | | | +--|D |-----|------o||||||------>|9 A1 |
| | | | +----|A2 Y0|-----|-----o|||||||------>|10 A0 |
| | | +------|A1 | | |||||||| | |
| | +--------|A0 RST| | |||||||| | ZIF28 |
| | +-------+ | +------------+ | socket |
| | | | | data in | | for |
| | +5 +-->|/OE | | EEPROM |
| | | 574 | | |
| +------------------------------->|CLK | | |
+----+ | data out | | |
| +------------+ | |
| +------------+ |||||||| | |
9 o-------------------------->| SEL | |||||||| | |
| | B3|<----|||||||o------|19 D7 |
11 o---<-----------------------|Y3 B2|<----||||||o-------|18 D6 |
12 o---<-----------------------|Y2 B1|<----|||||o--------|17 D5 |
13 o---<-----------------------|Y1 157 B0|<----||||o---------|16 D4 |
15 o---<-----------------------|Y0 A3|<----|||o----------|15 D3 |
| | A2|<----||o--- data---|13 D2 |
| | A1|<----|o---- bus ---|12 D1 |
| GND----|/OE A0|<----o-------------|11 D0 |
+5--o--+ | +------------+ | |
| | __ o---------------------------------------------->|20 /CE 14|
100K +-| \ | __ +---------+-+
sw1 | | O-o-| \ 1/2 74HCT132 |
o-->o----|__/ | O---390ohm--+ |
| | +-|__/ | GND -+
| --- 1uF | LED
| --- +5--+ |
| | |
+---o----------------------------o- GND
|
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