MSM6791 Datasheet, PDF (1/10 Pages) OKI electronic componets – DRAM Interface IC

¡ ^MSM6791 Semiconductor
MSM6791
DRAM Interface IC
¡ Semiconductor
GENERAL DESCRIPTION
The MSM6791 can be used as a memory for voice data by connecting OKI solid-state recording
and playback ICs (MSM6688 and MSM6788).
FEATURES
• DRAM (¥ 1-bit configuration)
1M-bit DRAM (MSM511000A, MSM511001A) : 8 pcs. can be connected.
4M-bit DRAM (MSM514100A, MSM514101A) : 8 pcs. can be connected.
16M-bit DRAM (MSM5116100A)
: 2 pcs. can be connected.
Note: MSM511002A/MSM514102A that corresponds to a static column mode cannot be used.
• Power supply voltage :
5V single rail
• Built-in refresh circuit (RAS only refresh)
• Original oscillation frequency:
8MHz
• Bit rates:
10kbps, 12.5kbps, 16kbps in MSM6788
connection (8kHz sampling fixation)
7.5kbps, 9.4kbps, 12kbps in MSM6788
connection (6kHz sampling fixation)
16kbps~32kbps in MSM6688 connection
(4kHz~8kHz sampling)
• Package:
44-pin plastic QFP (QFP44-P-910-2K) (Product name : MSM6791GS-2K)