SM55161A Datasheet, PDF (25/64 Pages) Austin Semiconductor – 262144 x 16 BIT VRAM MULTIPORT VIDEO RAM

Austin Semiconductor, Inc.
VRAM
SM55161A
Production
ELECTRICAL CHARACTERISTICS OVER RECOMMENDED RANGES OF SUPPLY
VOLTAGE AND OPERATING FREE-AIR TEMPERATURE (UNLESS OTHERWISE NOTED)
PARAMETER
High-level output voltage
Low-level output voltage
SYMBOL
CONDITIONS
V_OH V_OH = -1 mA
V_OL V_OL = 2 mA
SAM
PORT
-70
-75
-80
MIN MAX MIN MAX MIN MAX UNIT
2.4
2.4
2.4
V
0.4
0.4
0.4 V
Input current (leakage)
V_CC = 5.5V,
I_I V_I = 0V to 5.8V,
All other pins at 0V to V_CC
±10
±10
±10 µA
Output current (leakage)³
I_O V_CC = 5.5V, V_O = 0V to V_CC
±10
±10
±10 µA
Operating current²
I_CC1 See note 4
Standby
140
130
120 mA
Operating current²
I_CC1A t_c(SC) = MIN
Active
180
170
160 mA
Standby current
I_CC2 All clocks = V_CC
Standby
12
12
12 mA
Standby current
I_CC2A tc(SC) = MIN
Active
60
55
50 mA
RAS\-only refresh current
RAS\-only refresh current
Page-mode current²
Page-mode current2
I_CC3
I_CC3A
I_CC4
I_CC4A
See note 4
tc(SC) = MIN⁵
tc(P) = MIN⁵
tc(SC) = MIN⁵
Standby
130
120
115 mA
Active
175
165
155 mA
Standby
140
130
120 mA
Active
190
180
170 mA
CBR current
CBR current
I_CC5
I_CC5A
See note 4
tc(SC) = MIN⁵
Standby
110
100
95 mA
Active
150
140
130 mA
Data-transfer current
I_CC6 See note 4
Standby
120
120
110 mA
Data-transfer current
I_CC6A tc(SC) = MIN
Active
170
160
150 mA
NOTES:
1. For conditions shown as MAX/MIN, use the appropriate value specified in the timing requirements.
2. Measured with outputs open.
3. SE\ is disabled for SQ output leakage tests.
4. Measured with one address change while RAS\ = V_IL; t_c(rd), t_c(W), t_c(TRD) = MIN.
5. Measured with one address change while CASx\ = V_IH.
SMJ55161A
Rev. 1.6 03/05
25
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.