YLCDRSK2378 Renesas Electronics America, YLCDRSK2378 Datasheet - Page 305

• Manufacturer Part Number: YLCDRSK2378
• Description: KIT DEV EVAL H8S/2378 LCD
• Manufacturer: Renesas Electronics America
• Series: H8®r

Specifications of YLCDRSK2378

• Main Purpose: Displays, LCD Controller
• Embedded: Yes, MCU, 16-Bit
• Utilized Ic / Part: YLCDRSK2378
• Primary Attributes: 5.7" QVGA, Touch Screen
• Secondary Attributes: Source Code on CD, Debugging Requires Emulator Cable E10A USB/JTAG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Section 6 Bus Controller (BSC)
T
T
T
T
T
Rp
Rr
Rr1
Rcw
Rc2
φ
SDRAMφ
Address bus
Precharge-sel
RAS
CAS
WE
CKE
High
NOP
PALL
REF
Figure 6.56 Auto Refresh Timing
(TPC = 0, TPC0 = 0, RLW1 = 0, RLW0 = 1)
Self-Refreshing: A self-refresh mode (battery backup mode) is provided for synchronous DRAM
as a kind of standby mode. In this mode, refresh timing and refresh addresses are generated within
the synchronous DRAM.
To select self-refreshing, set the RFSHE bit to 1 in REFCR. When a SLEEP instruction is
executed to enter software standby mode, the SELF command is issued, as shown in figure 6.57.
When software standby mode is exited, the SLFRF bit in REFCR is cleared to 0 and self-refresh
mode is exited automatically. If an auto refresh request occurs when making a transition to
software standby mode, auto refreshing is executed, then self-refresh mode is entered.
When using self-refresh mode, the OPE bit must not be cleared to 0 in SBYCR.
Rev.7.00 Mar. 18, 2009 page 237 of 1136
REJ09B0109-0700