r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 289

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

(Address shift size set to 8 bits)
DCTL
Figure 6.63 Example of DQMU and DQML Byte Control
This LSI
Notes: 1. Bank control is not available.
CS5 (SDRAMφ)
UCAS (DQMU)
LCAS (DQML)
2. The CKE and CS pins must be fixed to 1 when the power supply is input.
3. The CS pin must be fixed to 0 before accessing synchronous DRAM.
D15 to D0
CS2 (RAS)
CS3 (CAS)
I/O PORT
CS4 (WE)
OE (CKE)
A23
A21
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
16-Mbit synchronous DRAM
1 Mword × 16 bits × 4-bank configuration
8-bit column address
Rev. 1.00 Sep. 19, 2008 Page 259 of 1342
DQMU
RAS
CAS
WE
A13 (BS1)
A12 (BS0)
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
DQ15 to DQ0
CKE
CS
CLK
DQML
Section 6 Bus Controller (BSC)
address: A13/A12
input: A11 to A0
Column address
input: A7 to A0
Row address
Bank select
REJ09B0467-0100