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MB89155 Datasheet(PDF) 4 Page - Fujitsu Component Limited. |
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MB89155 Datasheet(HTML) 4 Page - Fujitsu Component Limited. |
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4 / 52 page  4 MB89150/150A Series s DIFFERENCES AMONG PRODUCTS 1. Memory Size Before evaluating using the piggyback product, verify its differences from the product that will actually be used. Take particular care on the following points: • On the MB89151/A, addresses 0140H and later of the register bank cannot be used. On the MB89152/A, 153/A, 154/A, 155/A, and MB89P155, addresses 0180H and later of each register bank cannot be used. • On the MB89P155, addresses BFF0H to BFF6H comprise the option setting area, option settings can be read by reading these addresses. • The stack area, etc., is set at the upper limit of the RAM. 2. Current Consumption • In the case of the MB89PV150, add the current consumed by the EPROM which is connected to the top socket. • When operated at low speed, the product with an OTPROM (one-time PROM) or an EPROM will consume more current than the product with a mask ROM. However, the current consumption in sleep/stop modes is the same. (For more information, see sections “s Electrical Characteristics” and “s Example Characteristics.”) 3. Mask Options Functions that can be selected as options and how to designate these options vary by the product. Before using options check section “s Mask Options.” Take particular care on the following point: • On the MB89PV150, options are fixed, except for the segment output selection. |
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