U632H16 Datasheet, PDF (13/15 Pages) List of Unclassifed Manufacturers – PowerStore 2K x 8 nvSRAM

U632H16
Disabling Automatic STORES: STORE Cycle Inhibit and Automatic Power Up RECALL
V_CAP
5.0 V
V_SWITCH
Power Up
RECALL
(24)
t_RESTORE
t
STORE inhibit
V_CAP
1
2
3
4
5
+
6
7
100 μF 0.1 μF
8
± 20 % Bypass
9
10
11
12
13
14
V_SS
V_CCX
28
27
26
25 ^HSB
24
23
22
21
20
19
18
17
16
15
Power
Supply
10 KΩ
(optional,
see description HSB
nonvolatile store)
Figure 1: Automatic STORE Operation
Schematic Diagram
V_{CAP 1}
2
3
4
5
6
7
0.1 μF
Bypass
8
9
10
11
12
13
14
V_SS
28 ^VCCX
27
26
25 ^HSB
24
23
22
21
20
19
18
17
16
15
Power
Supply
10 KΩ
(optional,
see description HSB
nonvolatile store)
Figure 2: Disabling Automatic STORES
Schematic Diagram
Low Average Active Power
The U632H16 has been designed to draw significantly
less power when E is LOW (chip enabled) but the
access cycle time is longer than 55 ns.
When E is HIGH the chip consumes only standby cur-
rent.
The overall average current drawn by the part depends
on the following items:
1. CMOS or TTL input levels
2. the time during which the chip is disabled (E HIGH)
3. the cycle time for accesses (E LOW)
4. the ratio of READs to WRITEs
5. the operating temperature
6. the power supply voltage level
The information describes the type of component and shall not be considered as assured characteristics. Terms of
delivery and rights to change design reserved.
March 31, 2006
STK Control #ML0046
13
Rev 1.0