r8a66120ffa Renesas Electronics Corporation., r8a66120ffa Datasheet - Page 2

• Manufacturer Part Number: r8a66120ffa
• Description: 4m-bit X 2 Multiple Field Memory
• Manufacturer: Renesas Electronics Corporation.

Power on reset input
Write control inputs
for A-system
Write control inputs
for B-system
Block Diagram
REJ03F0161-0170 Rev.1.70 May.16.2008
R8A66120FFA
Mode setting input
page 2 of 14
Test setting input
WRESA
WEA
WRESB
WEB
MODE
TEST<2:1>
POR
Vcc
GND
Data output
Data input
DA<3:0>
QA<3:0>
MODE CONTROL CIRCUIT
MODE CONTROL CIRCUIT
256K-word x 16-bit
256K-word x 16-bit
OUTPUT BUFFER
INPUT BUFFER
MEMORY ARRAY
DB<3:0>
QB<3:0>
Read control inputs
for A-system
Clock inputs
Read control inputs
for B-system
RRESA
REA
RRESB
REB
CKA
CKB