TMS320E25
SPRS010B Ð MAY 1987 Ð REVISED NOVEMBER 1990
EPROM PROGRAMMING
absolute maximum ratings over specified temperature range (unless otherwise noted)²
Supply voltage range, VPP³ | ± 0.6 V to 15 V |
Input voltage range on pins 24 and 25 | ± 0.3 V to 15 V |
² Stresses beyond those listed under ªAbsolute Maximum Ratingsº may cause permanent damage to the device. This is a stress ratingonly, and functional operation of the device at these or any other conditions beyond those indicated in the ªRecommended Operating Conditionsº section of this specification is not implied. Exposure to
³All voltage values are with respect to GND.
recommended operating conditions
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| MIN | NOM | MAX | UNIT |
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VCC | Programming mode supply voltage (see Note 13) |
| 6 |
| V |
VCC | Read mode supply voltage | 4.75 | 5 | 5.25 | V |
VPP | Programming mode supply voltage | 12 | 12.5 | 13 | V |
VPP | Read mode supply voltage (see Note 12) |
| VCC |
| V |
NOTES: 12. VPP can be connected to VCC directly (except in the program mode). VCC supply current in this case would be ICC + IPP. During programming, VPP must be maintained at 12.5 V (± 0.25 V).
13.VCC must be applied before or at the same time as VPP and removed after or at the same time as VPP. This device must not be inserted into or removed from the board when VPP or VCC is applied.
electrical characteristics over specified temperature range (unless otherwise noted)
| PARAMETER | TEST CONDITIONS | MIN TYP§ | MAX | UNIT |
IPP1 | VPP supply current | VPP = VCC = 5.25 V |
| 100 | ∝A |
IPP2 | VPP supply current (during program pulse) | VPP = 13 V | 30 | 50 | mA |
§ All typical values for ICC are at VCC = 5 V, TA = 25°C.
recommended timing requirements for programming, TA = 25°C, VCC = 6 V, VPP = 12.5 V
(see Notes 14 and 15)
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| MIN | NOM | MAX | UNIT |
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tw(IPGM) | Initial program pulse duration | 0.95 | 1 | 1.05 | ms | ||||||
tw(FPGM) | Final pulse duration | 2.85 |
| 78.75 | ms | ||||||
tsu(A) | Address setup time | 2 |
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| ∝s | ||||||
tsu(E) |
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| setup time | 2 |
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| ∝s | ||||
E |
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tsu(G) |
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| setup time | 2 |
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| ∝s | ||||
G |
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tdis(G) | Output disable time from |
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| 0 |
| 130¶ | ns | |||
G |
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ten(G) | Output enable time from |
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| 150¶ | ns | ||
G |
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tsu(D) | Data setup time | 2 |
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| ∝s | ||||||
tsu(VPP) | VPP setup time | 2 |
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| ∝s | ||||||
tsu(VCC) | VCC setup time | 2 |
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| ∝s | ||||||
th(A) | Address hold time | 0 |
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| ∝s | ||||||
th(D) | Data hold time | 2 |
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| ∝s | ||||||
¶ Value derived from characterization data and not tested.
NOTES: 14. For all switching characteristics and timing measurements, input pulse levels are 0.4 V to 2.4 V and VPP = 12.5 V ± 0.5 V during programming.
15. Common test conditions apply for tdis(G) except during programming.
ADVANCE INFORMATION
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001 | 33 |
