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PDF SN11087 Data sheet ( Hoja de datos )
| Número de pieza | SN11087 | |
| Descripción | Second Generation USB1.1 Flash Memory Controller | |
| Fabricantes | SONiX Technology Company | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SN11087 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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SN11087
2003/7/8 ver 0.3
SN11087
Second Generation USB1.1 Flash Memory Controller
Version 0.3
2003/7/8
1 General Description
SN11087 is a high-performance integrated circuit to access the NAND type Flash memory
via the USB 1.1 bus. It provides a flexible and cost efficient single chip solution for external
storage applications such as USB Disk (Flash Disk). With the capability to be pin-to-pin
compatible to SN11085, the current user of SN11085 can easily upgrade to SN11087 with no
engineering effort needed at all. With all the features inherited from SN11085/086 like the
low 6MHz system clock to reduce the EMI, the embedded translation table to eliminate the
cost of external memory, the Sonix proprietary randomization algorithm to extend the
lifetime of flash memory and ensure the product robustness, and the real time ECC correction
function, the SN 11087 adds several other unique features to reduce the cost of the end
product and meet the customer’s requirements.
To enrich the product line of the OEM manufacture, with the ability to support 8 pieces of
flash memories and the new types of 2G bits flashes, SN11087 can be used to build up a
storage device up to 2 Giga bytes. To reduce the total cost of the end product, SN11087
incorporates a power MOS inside to meet the current requirement (500 uA) in USB suspend
state. The usage of EEPROM can also now be eliminated by the capability to program the
customized vendor/product ID/string in the flash itself. Therefore, the total cost is reduced by
upgrade from SN11085 to SN11087.
For fulfilling different customers’ needs, SN11087 now provides several ways to build
different end products. The first one is to provide different security functions. The OEM
manufacturers can program one of the two ways in manufacturing via software. The flashing
ways of LED can also be selected by software now. The pin 35 of SN11087 is now used to
support new security feature. The original two security features provided in SN11085/86 still
1
1 page  
SN11087
2003/7/8 ver 0.3
12 GND
PWR
13 VDD
PWR
14 FLCLE DO 24mA
15 FLCE1 DO 8mA
16 FLCE3 DO 8mA
17 FLCE5 DO 8mA
18 FLCE7 DO 8mA
19 LED
DIO 24mA PD
20 RSTN DI
PU
21 TEST DI
PD
22 GPIO1 DIO 8mA
23 XIN
I --
24 XOUT O - -
25 VDD
PWR
-
26 FLVDD PWR
-
27 FLPOWER DO 8mA OC
28 GPIO0 DIO 8mA
29 ROMCS DO 4mA
30 GND
31 VDD
32 ROMSK
PWR
PWR
DO 4mA
33 ROMDI DO 4mA
34 ROMDO DI 4mA
35 GPIO1 DIO 8mA -
36 FLWPSW DI
PU
37 AVDD PWR
38 AVSS PWR
39 DPLUS AIO - -
40 DMINUS AIO - -
41 FLCE8 DO 8mA
42 FLCE6 DO 8mA
Digital ground
Digital 3.3V
Flash memory command latch enable
Flash memory chip enable 1
Flash memory chip enable 3
Flash memory chip enable 5
Flash memory chip enable 7
LED lighter
Chip reset, connected to external RC circuit
Test pin, NC in normal operation
Do Not Connect
Crystal input or oscillator input
Crystal output or no connection
Digital 3.3V
3.3V power to flash VDD
Flash power control, connect to external MOS
Needs to be pulled up externally.
General Purpose Input/Output 0 for internal test
Always pull up for normal operation
Chip select for external EEPROM
Digital ground
Digital 3.3V
Clock for external serial EEPROM
Serial data to external EEPROM
Serial data from external EEPROM, pull up
externally if no EEPROM is connected
General Purpose Input/Output 1. Pull up/down
depends on operation modes
Flash write protect switch
Analog 3.3V
Analog ground
USB D+ signal
USB D- signal
Flash memory chip enable 8
Flash memory chip enable 6
5
5 Page 
SN11087
USBCLKin
XI/XOUT crystal value
USBCLKin duty cycle
6 (typ)
50 ± 2
6.4.3 External EEPROM interface
Table 9
symbol
Fsk
parameter
ROMSK pin clock frequency
value
200
2003/7/8 ver 0.3
MHz
%
unit
kHz
6.5 Power consumption
Table 10
symbol
Io_max
Is_max
parameter
Max current in operation
Max current in suspend mode
value
20
TBD
unit
mA
uA
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet SN11087.PDF ] | |
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