HYB39S13620TQ- Datasheet, PDF (6/70 Pages) Siemens Semiconductor Group – Special Mode Registers Two color registers Burst Read with Single Write Operation

HYB 39S16320TQ-6/-7/-8
Signal Pin Description (cont’d)
Pin
Type Signal Polarity Function
DQM0 - Input Pulse –
DQM3
During Read, DQM = 1 turns off the output buffers.
During Write, DQM = 1 prevents a write to the current
memory location.
DQM0 corresponds to DQ0 - DQ7
DQM1 corresponds to DQ8 - DQ15
DQM2 corresponds to DQ16 - DQ23
DQM3 corresponds to DQ24 - DQ31
V_DD
V_SS
V_DDQ
V_SSQ
DSF
Supply –
–
Supply –
–
Input Level –
Power and ground for the input buffers and the core logic.
Isolated power supply and ground for the output buffers to
provide improved noise immunity.
DSF is part of the input command to the SGRAM. If DSF is
low, SGRAM operates in the same way as SDRAMs. When
DSF is high it enables the block write and masked write
and special mode register setup cycle.
Semiconductor Group
6
1998-10-01