Pin No. | Pin name | I/O |
| Description | ||
|
|
|
|
|
|
|
45 |
| LROF | 0 |
|
| Test data output. Not used (OPEN) |
|
|
|
|
|
|
|
46 |
| LR1F | 0 |
|
| Test data output. Not used (OPEN) |
|
|
|
|
|
|
|
47 |
| XRST | I |
| System reset input. (Active "L") | |
|
|
|
|
|
|
|
48 |
| EDO | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
49 |
| ED16 | I/O |
| External RAM data input/output. | |
50 |
| ED1 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
51 |
| ED17 | I/O |
| External RAM data input/output. | |
|
|
|
|
|
|
|
52 |
| ED2 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
53 |
| Voo | - |
|
| Power supply. (+5V) |
|
|
|
|
|
|
|
54 |
| Vss | - |
|
| Power supply. (GND) |
|
|
|
|
|
|
|
55 |
| ED18 | I/O |
| External RAM data input/output. | |
|
|
|
|
|
|
|
56 |
| ED3 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
57 |
| ED19 | I/O |
| External RAM data input/output. | |
|
|
|
|
|
|
|
58 |
| ED4 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
59 |
| ED20 | I/O |
| External RAM data input/output. | |
60 |
| ED5 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
61 |
| ED21 | I/O |
| External RAM data input/output. | |
62 |
| Vss | - |
|
| Power supply. (GND) |
|
|
|
|
|
|
|
63 |
| ED6 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
64 |
| ED22 | I/O |
| External RAM data input/output. | |
|
|
|
|
|
|
|
65 |
| ED7 | I/O |
| External RAM data input/output. Not used (L level) | |
|
| |||||
|
|
|
|
|
|
|
66 |
| ED23 | I/O |
| External RAM data input/output. | |
67 |
| ED8 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
68 |
| ED24 | I/O |
| External RAM data input/output. | |
| ||||||
69 |
| ED9 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
70 |
| Vss | - |
|
| Power supply. (GND) |
|
|
|
|
|
|
|
71 |
| ED25 | I/O |
| External RAM data input/output. | |
|
|
|
|
|
|
|
72 |
| ED 10 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
73 |
| ED26 | I/O |
| External RAM data input/output. | |
|
|
|
|
|
|
|
74 |
| ED 11 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
75 |
| ED27 | I/O |
| External RAM data input/output. | |
|
|
|
|
|
|
|
76 |
| ED12 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
77 |
| ED28 | I/O |
| External RAM data input/output. | |
78 |
| Voo | - |
|
| Power supply. (+5V) |
|
|
|
|
|
|
|
79 |
| Vss | - |
|
| Power supply. (GND) |
|
|
|
|
|
|
|
80 |
| ED 13 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
81 |
| ED29 | I/O |
| External RAM data input/output. | |
82 |
| ED14 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
83 |
| ED30 | I/O |
| External RAM data input/output. | |
|
|
|
|
|
|
|
84 |
| ED15 | I/O |
| External RAM data input/output. Not used (L level) | |
|
|
|
|
|
|
|
85 |
| ED31 | I/O |
| External RAM data input/output. | |
|
|
|
|
|
|
|
86 |
| XOE | 0 |
|
| External RAM OE output. |
|
|
|
|
|
|
|
87 |
| Vss | - |
|
| Power supply. (GND) |
|
|
|
|
|
|
|
88 |
| CAS | 0 |
|
| External DRAM CAS output. |
|
|
|
|
|
|
|
89 |
| XWE | 0 |
|
| External RAM WE output. |
|
|
|
|
|
|
|
90 |
| RAS | 0 |
|
| External DRAM CAS/external (P) SRAM CEo |
|
|
|
|
|
|
|
91 - | 94 | 0 |
|
| External RAM address output. | |
|
|
|
|
|
|
|
95 |
| Vss | - |
|
| Power supply. (GND) |
|
|
|
|
|
|
|
96 - | 99 | 0 |
|
| External RAM address output. | |
|
|
|
|
|
| |
100 | EA8 | 0 |
|
| External RAM address output. Not used (OPEN) | |
|
|
|
|
|
|
|
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