R1QGA7236ABG_15 Datasheet, PDF (22/39 Pages) Renesas Technology Corp – 72-Mbit QDR™II+ SRAM 4-word Burst

Common
R1QGA72 / R1QKA72 Series
Output load conditions Output load and voltage conditions
1.8V±0.1V 1.5V
V_DDQ / 2
= 0.75V
V_DD
V_DDQ
V_REF
SRAM
V_SS
Q
250Ω
ZQ
Z₀ = 50Ω
V_DDQ / 2
= 0.75V
50Ω
AC Operating Conditions
Parameter
Symbol
Min
Typ
Max
Unit Notes
Input high voltage
Input low voltage
Notes:
V_{IH (AC)}
V_REF + 0.2
⎯
⎯
V 1, 2, 3, 4
V_{IL (AC)}
⎯
⎯
V_REF – 0.2
V
1, 2, 3, 4
1. All voltages referenced to V_SS (GND).
During normal operation, V_DDQ must not exceed V_DD.
2. These conditions are for AC functions only, not for AC parameter test.
3. Overshoot: V_{IH (AC)} ≤ V_DDQ + 0.5 V for t ≤ t_KHKH/2
Undershoot: V_{IL (AC)} ≥ −0.5 V for t ≤ t_KHKH/2
Control input signals may not have pulse widths less than t_KHKL (min) or operate at cycle rates
less than t_KHKH (min).
4. To maintain a valid level, the transitioning edge of the input must:
a. Sustain a constant slew rate from the current AC level through the target AC level,
V_{IL (AC)} or V_{IH (AC)}.
b. Reach at least the target AC level.
c. After the AC target level is reached, continue to maintain at least the target DC level,
V_{IL (DC)} or V_{IH (DC)}.
Rev. 0.11 : 2013.01.15
R10DS0183EJ0011
PAGE:22