HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 188

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

Operation in Power-Down State: The refresh controller operates in sleep mode. It does not
operate in hardware standby mode. In software standby mode RTCNT is initialized, but RFSHCR,
RTMCSR bits 5 to 3, and RTCOR retain their settings prior to the transition to software standby
mode.
ø
Address
bus
CS
RD
HWR
LWR
RFSH
Figure 7-16 Signal Output Timing in Self-Refresh Mode (PSRAME = 1, DRAME = 0)
3
High
Software standby mode
High-impedance
High-impedance
High-impedance
High-impedance
174
Oscillator
settling time