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參數(shù)資料
| 型號： | DS1610 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Partitioned NV Controller(分割式非易失性控制器) |
| 中文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PDIP16 |
| 封裝： | 0.300 INCH, DIP-16 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 85K |
| 代理商： | DS1610 |
DS1610
Partitioned NV Controller
DS1610
022598 1/10
FEATURES
Converts CMOS RAMs into nonvolatile memories
SOIC version is pin compatible with the Dallas Semi-
conductor DS1210 NV Controller
Unconditionally write protects all of memory when V
cc
is out of tolerance
Write protects selected blocks of memory regardless
of V
CC
status when programmed
Automatically switches to battery backup supply
when power fail occurs
Provides for multiple batteries
Consumes less than 100 nA of battery current
Test battery on power up by inhibiting the second
memory cycle
Optional 5% or 10% Power Fail Detection
16-pin DIP or 16-pin SOIC Surface Mount Package
Low forward voltage drop on the V
CC
switch with cur-
rents of up to 150 mA
Optional industrial temperature range of
-40
°
C to +85
°
C
PIN ASSIGNMENT
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A
W
V
CCO
A
X
V
BAT1
A
Y
TOL
DIS
GND
PF0
V
CCI
A
Z
V
BAT2
WEO
CEO
WEI
CEI
16-Pin DIP and 16-Pin SOIC
PIN DESCRIPTION
V
CCI
V
BAT1
V
BAT2
V
CCO
GND
CEI
CEO
WEI
WEO
TOL
A
W
- A
Z
DIS
PF0
– Input +5 Volt Supply
– + Battery 1 Input
– + Battery 2 Input
– RAM Power (V
CC
) Supply
– Ground
– Chip Enable Input
– Chip Enable Output
– Write Enable Input
– Write Enable Output
– Power Supply Tolerance Select
– Address Inputs
– Memory Partition Disable
– Power Fail Output
DESCRIPTION
The DS1610 is a low power CMOS circuit which solves
the application problems of converting CMOS RAMS
into nonvolatile memories. In addition the device has
the ability to unconditionally write protect blocks of
memory so that inadvertent write cycles do not corrupt
program and special data space. The power supply in-
coming voltage at the V
CCI
input pin is constantly moni-
tored for an out of tolerance condition. When such a
condition is detected, both the chip enable and write en-
able outputs are inhibited to protect stored data. The
battery inputs are used to supply V
CCO
with power when
V
CCI
is less than the battery input voltages. Special cir-
cuitry uses a low leakage CMOS process which affords
precise voltage detection at extremely low current con-
sumption. By combining the DS1610 Partitioned NV
Controller chip with a CMOS memory and batteries,
nonvolatile RAM operation can be achieved.
The DS1610 Partitioned NV Controller functions like the
Dallas Semiconductor DS1210 NV controller when the
(DIS) disable pin is grounded. An internal pulldown re-
sistor to ground on the DIS pin of the DS1610S allows it
to retrofit into DS1210S applications. When the DIS pin
is grounded the address inputs A
W
- A
Z
and the write en-
able input WEI are ignored. Also the power fail output
PFO and the write enable output WEO are tristated.
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