hm62g18512 Renesas Electronics Corporation., hm62g18512 Datasheet - Page 8

• Manufacturer Part Number: hm62g18512
• Description: 8m Synchronous Fast Static Ram 512k-word X 18-bit - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

HM62G18512 Series
DC Characteristics (Ta = 0 to 70 C, [Tj max = 110 C], V
Parameter
Input leakage current
Output leakage current I
Standby current
V
excluding output drivers
V
excluding output drivers
Quiescent active power
supply current
Output low voltage
Output high voltage
ZQ pin connect
resistance
Output low current
Output high current
Notes: 1. 0
8
DD
DD
4 ns cycle
5 ns cycle
operating current,
operating current,
2. 0
3. All inputs (except clock) are held at either V
4. Iout = 0 mA, read 50%/write 50%, V
5
6. Minimum impedance push pull output buffer mode, I
7. Measured at V
8. Measured at V
9. Output buffer impedance can be programmed by terminating the ZQ pin to V
.
guaranteed at 75 C junction temperature.
Iout = 0 mA, read 50%/write 50%, V
precision resister (RQ). The value of RQ is five times the output impedance desired. The
allowable range of RQ to guarantee impedance matching with a tolerance of 15% is between
150
impedance occurs with ZQ connected to V
occurs when the SRAM is in High-Z. Write and Deselect operations will synchronously switch
the SRAM into and out of High-Z, therefore triggering an update. The user may choose to
invoke asynchronous G updates by providing a G setup and hold about the K clock to guarantee
the proper update. At power-up, the output impedance defaults to minimum impedance. It will
take 2048 cycles for the impedance to be completely updated if the programmed impedance is
much higher than minimum impedance.
Vin
Vout
and 300
V
V
DDQ
DDQ
Symbol Min
I
I
I
I
I
V
V
RQ
I
I
LI
LO
SBZZ
DD4
DD5
DD2
OL
OH
for all input pins (except V
OL
OH
OL
OH
, DQ in High-Z.
= 1/2 V
= 1/2 V
If the status of ZQ pin is open, output impedance is maximum. Maximum
—
—
—
—
—
—
V
V
150
(V
(V
DDQ
DDQ
SS
DDQ
DDQ
DDQ
.
.
– 0.4
/2)/[(RQ/5)–15%]
/2)/[(RQ/5–4)+15%] —
DD
DD
= V
= V
REF
DD
DD
DDQ
, ZQ, M1, M2 pin).
IH
max, V
max, V
. The impedance update of the output driver
or V
IL
Typ Max
—
—
—
—
—
—
—
—
250
—
, ZZ is held at V
IN
IN
OH
= V
= V
= –6 mA, I
2
5
100
700
600
200
V
V
300
(V
(V
IH
IH
SS
DDQ
DDQ
DDQ
or V
or V
DD
+ 0.4
/2)/[(RQ/5)+15%]
/2)/[(RQ/5–4)–15%] mA
IL
IL
= 3.3 V +10%, –5%)
, Frequency = minimum cycle.
, Frequency = 3 MHz.
OL
IH
= 6 mA.
, Iout = 0 mA, Spec is
SS
through a
Unit Notes
mA
mA
mA
mA
V
V
mA
A
A
1
2
3
4
4
5
6
6
7, 9
8, 9