hm5216805 Renesas Electronics Corporation., hm5216805 Datasheet - Page 13

• Manufacturer Part Number: hm5216805
• Description: 16 M Lvttl Interface Sdram 100 Mhz/83 Mhz 1-mword 8-bit 2-bank/2-mword 4-bit 2-bank - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

HM5216805 Series, HM5216405 Series
Self-refresh entry [SELF]: When this command is input during the IDLE state, the synchronous DRAM
starts self-refresh operation. After the execution of this command, self-refresh continues while CKE is
Low. Since self-refresh is performed internally and automatically, external refresh operations are
unnecessary.
Power down mode entry: When this command is executed during the IDLE state, the synchronous
DRAM enters power down mode. In power down mode, power consumption is suppressed by cutting off
the initial input circuit.
Self-refresh exit: When this command is executed during self-refresh mode, the synchronous DRAM can
exit from self-refresh mode. After exiting from self-refresh mode, the synchronous DRAM enters the
IDLE state.
Power down exit: When this command is executed at the power down mode, the synchronous DRAM can
exit from power down mode. After exiting from power down mode, the synchronous DRAM enters the
IDLE state.
13