UPD43256BGU-85LL Renesas Electronics America, UPD43256BGU-85LL Datasheet - Page 16

• Manufacturer Part Number: UPD43256BGU-85LL
• Manufacturer: Renesas Electronics America

Specifications of UPD43256BGU-85LL

• Density: 256Kb
• Access Time (max): 85ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 5V
• Address Bus: 15b
• Package Type: SOP
• Operating Temp Range: 0C to 70C
• Number Of Ports: 1
• Supply Current: 45mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 28
• Word Size: 8b
• Number Of Words: 32K
• Lead Free Status / Rohs Status: Not Compliant

Write Cycle Timing Chart 2 (/CS Controlled)
Cautions 1. /CS or /WE should be fixed to high level during address transition.
Remark
14
Address (Input)
2. When I/O pins are in the output state, therefore the input signals must not be applied to
Write operation is done during the overlap time of a low level /CS and a low level /WE.
/WE (Input)
/CS (Input)
I/O (Input)
the output.
High impedance
t
AS
Data Sheet M10770EJGV0DS
t
AW
t
WC
t
WP
t
CW
t
DW
Data in
t
t
WR
DH
μ
impedance
PD43256B
High