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- PART III. TYPES OF NAMS
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- NAM Types Used in Cellular Phones
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- NAM- Number Assignment Module - A 32 word by 8 bit PROM
- The NAM contains all the information that can be programmed to the phone
- directly from the handset. (i.e. SIDH,MIN,LOCK-CODE,etc.).
-
- All phones except NEC will accept tri-state NAMs. NEC requires an open
- collector NAM. Fujitsu phones will accept either open collector or tri-
- state NAMs.
-
- Brand Qualifications: Fujitsu and Alpine phones will not operate properly
- with any Harris Brand NAM or with any Signetics brand NAMs with a part
- number NOT ending with an "A". TI NAMs must not be used in GE Star models.
- Panasonic has suggested only TI NAMs should be used in their phones. NAMs
- are available in ceramic (F) or plastic encapsulation (N).
-
- BRAND OPEN COL. TRI-STATE OPEN COL. TRI-STATE
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- Signetics 82S23 82S123
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- Texas Inst. 74S188 74S288 TBP18SA030 TBP18S030
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- AMD AM27LS18 AM27LS19 AM27S18 AM27S19
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- Texas Inst. TBP38SA030 TBP38S030
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- Harris HM7602 HM7603
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- MMI 53/6330 53/6331
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- MMI 53/63S080 53/63S081
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- NSC DM54S188 DM54S288 DM74S188
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- NSC DM82S23 DM82S123
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- Motorola This is for a special NAM used in some Motorolas. Requires
- an adapter.
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- Fujitsu MB7056 MB7051
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