发明名称 |
Speichervorrichtung mit Standby-Funktion |
摘要 |
A memory device includes a memory (101-2), an address latch (101-6), a built-in incrementer (101-5), and an address decoder (101-4). The address decoder (101-4) has a mapping register (201) which assigns the memory (101-2 ) to a prede termined address. The address decoder (101-4) further includes a standby signal producer (300) which detects whether or not the address latch (101-6) addresses an address specified by the mapping register (201) and which sets the memory device to a standby state of a low power consumption when such is not detected. The memory device can be set to a standby state even when the memory device is connected to a microcomputer with a protocol by which an address of the memory is not outputted each time. This arrangement enables to save power consumption of the computer, to decrease the load of a power supply circuit in a microcomputer (100) applied apparatus and to make the apparatus compact. <IMAGE> |
申请公布号 |
DE69129926(T2) |
申请公布日期 |
1999.04.22 |
申请号 |
DE1991629926T |
申请日期 |
1991.05.22 |
申请人 |
NEC CORP., TOKIO/TOKYO, JP |
发明人 |
MATSUSHIMA, OSAMU, MINATO-KU, TOKYO, JP |
分类号 |
G11C11/41;G06F1/32;G06F12/02;G06F12/06;(IPC1-7):G06F1/32 |
主分类号 |
G11C11/41 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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