MS81V04160-25TB Oki Semiconductor, MS81V04160-25TB Datasheet

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MS81V04160-25TB

Manufacturer Part Number
MS81V04160-25TB
Description
Dial FIFO (262,214-word x 8-bits) x 2
Manufacturer
Oki Semiconductor
Datasheet

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MS81V04160-25TB
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The MS81V04160 is a single-chip 4Mb FIFO functionally composed of two OKI 2Mb FIFO
(First-In First-Out) memories which were designed for 256k x 8-bit high-speed
asynchronous read/write operation.
The read clocks and the write clocks of each of the 2Mb FIFO memories are connected in
common. The MS81V04160, functionally compatible with Oki's 2Mb FIFO memory
(MSM51V8222A), can be used as a x16 configuration FIFO.
The MS81V04160 is a field memory for wide or low end use in general commodity TVs and
VTRs exclusively and is not designed for high end use in professional graphics systems,
which require long term picture storage, data storage, medical use and other storage
systems.
The MS81V04160 provides independent control clocks to support asynchronous read and
write operations. Different clock rates are also supported, which allow alternate data rates
between write and read data streams.
The MS81V04160 provides high speed FIFO (First-in First-out) operation without external
refreshing: MS81V04160 refreshes its DRAM storage cells automatically, so that it appears
fully static to the users.
Moreover, fully static type memory cells and decoders for serial access enable the refresh
free serial access operation, so that serial read and/or write control clock can be halted
high or low for any duration as long as the power is on. Internal conflicts of memory access
and refreshing operations are prevented by special arbitration logic.
The MS81V04160’s function is simple, and similar to a digital delay device whose delay-bit-
length is easily set by reset timing. The delay length and the number of read delay clocks
between write and read, is determined by externally controlled write and read reset timings.
Additional SRAM serial registers, or line buffers for the initial access of 256 x 16-bit enable
high speed first-bit-access with no clock delay just after the write or read reset timings.
Additionally, the MS81V04160 has a write mask function or input enable function (IE), and
read- data skipping function or output enable function (OE). The differences between write
enable (WE) and input enable (IE), and between read enable (RE) and output enable (OE)
are that WE and RE can stop serial write/read address increments, but IE and OE cannot
stop the increment, when write/read clocking is continuously applied to MS81V04160. The
input enable (IE) function allows the user to write into selected locations of the memory
only, leaving the rest of the memory contents unchanged. This facilitates data processing to
display a “picture in picture” on a TV screen.
OKI Semiconductor
MS81V04160
GENERAL DESCRIPTION
Dual FIFO (262,214-word x 8-Bits) x 2
1
REVISION1 1999.4.15

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MS81V04160-25TB Summary of contents

Page 1

... The MS81V04160, functionally compatible with Oki's 2Mb FIFO memory (MSM51V8222A), can be used as a x16 configuration FIFO. The MS81V04160 is a field memory for wide or low end use in general commodity TVs and VTRs exclusively and is not designed for high end use in professional graphics systems, which require long term picture storage, data storage, medical use and other storage systems ...

Page 2

... Access Time 22ns/25ns Variable length delay bit (600 to 262215) Write mask function (Output enable control) Cascading capability by mode setting p Single power supply:3.3V Package: 100-Pin plastic TQFP(TQFP 100-P-1414-0.50-k)(Product:MS81V04160-xxTB) Parameter Access Time Read/Write Cycle Time Operation current Standby current 10% xx indicates speed rank. ...

Page 3

... MS81V04160 PIN CONFIGURATION (TOP VIEW Vss Vss 10 Vss 11 Vcc 12 Vcc 13 SWCK 14 Vcc 15 Vcc 16 Vss 17 Vss Vss Function Pin Name Serial Write Clock ...

Page 4

... MS81V04160 BLOCK DIAGRAM OKI Semiconductor 4 ...

Page 5

... MS81V04160 PIN DESCRIPTION Data Inputs: (DIN 10 - 17) These pins are used for serial data inputs. Write Reset: RSTW1 The first positive transition of SWCK after RSTW becomes high resets the write address pointers to zero. RSTW1 setup and hold times are referenced to the rising edge of SWCK. ...

Page 6

... MS81V04160 Serial Write Clock: SWCK The SWCK latches the input data on chip when WE1 high, and also increments the internal write address pointer. Data-in setup time tDS, and hold time tDH are referenced to the rising edge of SWCK. Serial Read Clock: SRCK Data is shifted out of the data registers ...

Page 7

... MS81V04160 Output Enable: OE2 OE2 is used to enable/disable the outputs. OE2 high level enables the outputs. The internal read address pointer is always incremented by cycling SRCK regardless of the OE2 level. Note that OE2 setup and hold times are referenced to the rising edge of SRCK. ...

Page 8

... MS81V04160 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings Parameter Symbol Input Output Voltage V Output Current I Power Dissipation P T Operating Temperature Storage Temperature T Recommended Operating Conditions Parameter Symbol Power Supply Voltage V Power Supply Voltage V Input High Voltage V Input Low Voltage V DC Characteristics Parameter Symbol ...

Page 9

... RE "L" Pulse Width OE "H" Pulse Width OE "L" Pulse Width RSTR Setup Time RSTR Hold Time SWCK Cycle Time SRCK Cycle Time Transition Time (Rise and Fall) OKI Semiconductor ( Vcc = 3.0 - 3.6V, MS81V04160-25 MS81V04160-30 Symbol Min. Max. Min. Max ...

Page 10

... MS81V04160 Notes: 1. Input signal reference levels for the parameter measurement are The transition time t IL between V = 3.0 V and measurements assume t 3. Read address must have more than a 600 address delay than write address in every cycle when asynchronous read/write is performed. ...

Page 11

... MS81V04160 OPERATION MODE Write Operation Cycle (MODE2=Vss) The write operation is controlled by seven control signals, SWCK, RSTW1, RSTW2, WE1, WE2 and IE1, IE2. Port1 write operation is accomplished by cycling SWCK, and holding WE1 high after the write address pointer reset operation or RSTW1. RSTW1 must be preformed for internal circuit initialization before Write operation ...

Page 12

... MS81V04160 Settings of WE1, 2 and IE1 the operation mode of Write address pointer and Data input. WE1,2 IE1 Read Operation Cycle (MODE2=Vss) The read operation is controlled by seven control signals, SRCK, RSTR1, RSTR2, RE1, RE2, and OE1, OE2. Port1 read operation is accomplished by cycling SRCK, and holding both RE1 and OE1 high after the read address pointer reset operation or RSTR1 ...

Page 13

... MS81V04160 Power-up and Initialization On power-up, the device is designed to begin proper operation after at least 100 us after Vcc has stabilized to a value within the range of recommended operating conditions. After this 100 us stabilization interval, the following initialization sequence must be performed. Because the read and write address pointers are undefined after power-up, a minimum of ...

Page 14

... MS81V04160 TIMING WAVEFORM Write Cycle Timing (Write Reset) : MODE1=Vcc , MODE2=Vss n cycle SWCK tRSTWS RSTW 1,2 tDS tDH DI n-1 10-17/20-27 IE 1,2 WE 1,2 Write Cycle Timing (Write Enable) : MODE1=Vcc , MODE2=Vss n cycle SWCK tWENH tWWEL WE 1,2 DI n-1 10-17/20-27 IE 1,2 RSTW 1,2 0 cycle 1 cycle tRSTWH tWSWH tWSWL tSWC n 0 Disable cycle Disable cycle ...

Page 15

... MS81V04160 Write Cycle Timing (Input Enable) : MODE1=Vcc , MODE2=Vss n cycle SWCK tIENH tWIEL IE 1,2 DI n-1 10-17/20-27 WE 1,2 RSTW 1,2 Write Cycle Timing (Write Reset) : MODE1=Vcc , MODE2=Vcc n cycle SWCK tRSTWS RSTW 1,2 tDS tDH DI n-1 10-27/20-27 WE 1,2 IE 1,2 n+1 cycle n+2 cycle tIDSH tIENS tIDSS tWIEH n 0 cycle tRSTWH OKI Semiconductor n+3 cycle ...

Page 16

... MS81V04160 Write Cycle Timing (Write Enable) : MODE1=Vcc , MODE2=Vcc n cycle SWCK tWENH tWWEL WE 1,2 DI n-1 10-17/20-27 IE 1,2 RSTW1,2 Write Cycle Timing (Input Enable) : MODE1=Vcc , MODE2=Vcc n cycle SWCK tIENH tWIEL IE 1,2 DI n-1 10-17/20-27 WE 1,2 RSTW 1,2 Disable cycle Disable cycle tWDSH tWDSS tWENS tWWEH n n+1 cycle n+2 cycle tIDSH tIDSS tIENS tWIEH ...

Page 17

... MS81V04160 Write Cycle Timing (Write Reset) : MODE1=Vss , MODE2=Vss n cycle SWCK tRSTWS RSTW 1,2 tDS tDH DI n 10-17/20-27 WE 1,2 IE 1,2 Write Cycle Timing (Write Enable) : MODE1=Vss , MODE2=Vss n cycle SWCK tWENH tWWEL WE 1 10-17/20-27 IE 1,2 RSTW 1,2 0 cycle 1 cycle tRSTWH tWSWH tWSWL tSWC 0 1 Disable cycle Disable cycle ...

Page 18

... MS81V04160 Write Cycle Timing (Input Enable) : MODE1=Vss , MODE2=Vss n cycle SWCK tIENH tWIEL IE 1 10-17/20-27 WE 1,2 RSTW 1,2 Write Cycle Timing (Write Reset) : MODE1=Vss , MODE2=Vcc n cycle SWCK RSTW 1,2 tDS tDH DI n-1 10-27/20-27 WE 1,2 IE 1,2 n+1 cycle n+2 cycle tIDSH tIENS tIDSS tWIEH n n-1 cycle 0 cycle tRSTWS tRSTWH OKI Semiconductor ...

Page 19

... MS81V04160 Write Cycle Timing (Write Enable) : MODE1=Vss , MODE2=Vcc n cycle SWCK tWENH tWWEL WE 1 10-17/20-27 IE 1,2 RSTW1,2 Write Cycle Timing (Input Enable) : MODE1=Vss , MODE2=Vcc n cycle SWCK tIENH tWIEL IE 1 10-17/20-27 WE 1,2 RSTW 1,2 Disable cycle Disable cycle tWDSH tWDSS tWENS tWWEH n+1 n+1 cycle n+2 cycle tIDSH tIDSS ...

Page 20

... MS81V04160 Read Cycle Timing (Read Reset) : MODE1=Vcc/Vss , MODE2=Vss n cycle SRCK tRSTRS RSTR 1,2 tAC DO n-1 10-17/20-27 RE 1,2 OE 1,2 Read Cycle Timing (Read Enable) : MODE1=Vcc/Vss , MODE2=Vss n cycle SRCK tRENH tWREL RE 1,2 DO n-1 10-17/20-27 OE 1,2 RSTR 1,2 1 cycle 0 cycle tRSTRH tWSRH tWSRL tSRC tDDCK n 0 Disable cycle Disable cycle tRDSH tRDSS ...

Page 21

... MS81V04160 Read Cycle Timing (Output Enable) : MODE1=Vcc/Vss , MODE2=Vss n cycle SRCK tOENH tWOEL OE 1,2 DO n-1 10-17/20-27 RE 1,2 RSTR 1,2 Read Cycle Timing (Read Reset) : MODE1=Vcc/Vss , MODE2=Vcc n cycle SRCK tRSTRS RSTR 1,2 tAC DO n-1 10-17/20-27 RE 1,2 OE 1,2 n+1 cycle n+2 cycle tODSH tOENS tODSS tWOEH n Hi-Z 0 cycle 1 cycle tRSTRH OKI Semiconductor n+3 cycle ...

Page 22

... MS81V04160 Read Cycle Timing (Read Enable) : MODE1=Vcc/Vss , MODE2=Vcc n cycle SRCK tRENH RE 1,2 tWREL tAC DO n-1 10-17/20-27 OE 1,2 RSTR 1,2 Read Cycle Timing (Output Enable) : MODE1=Vcc/Vss , MODE2=Vcc n cycle SRCK tOENH OE 1,2 tWOEL DO n-1 10-17/20-27 RE 1,2 RSTR 1,2 Disable cycle Disable cycle tRDSH tRDSS tRENS tWREH n n+1 cycle n+2 cycle tODSH tODSS tOENS ...

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