CY7C04312BV データシートの表示（PDF） - Cypress Semiconductor
部品番号
コンポーネント説明
メーカー
CY7C04312BV Datasheet PDF : 37 Pages
| |||
CY7C0430BV
CY7C04312BV
CY7C04314BV
applications. A port’s burst counter is loaded with an external
address when the port’s Counter Load pin (CNTLD) is
asserted LOW. When the port’s Counter Increment pin
(CNTINC) is asserted, the address counter will increment on
each subsequent LOW-to- HIGH transition of that port’s clock
signal. This will read/write one word from/into each successive
address location until CNTINC is deasserted. The counter can
address the entire switch array and will loop back to the start.
Counter Reset (CNTRST) is used to reset the burst counter.
A counter-mask register is used to control the counter wrap.
The counter and mask register operations are described in
more details in the following sections.
The counter or mask register values can be read back on the
bidirectional address lines by activating MKRD or CNTRD,
respectively.
The new features included for the QuadPort DSE family
include: readback of burst-counter internal address value on
address lines, counter-mask registers to control the counter
wrap-around, readback of mask register value on address
lines, interrupt flags for message passing, BIST, JTAG for
boundary scan, and asynchronous Master Reset.
Top Level Logic Block Diagram
Port 1 Operation-control Logic Blocks[2]
UBP1
LBP1
R/WP1
OEP1
CE0P1
CE1P1
Port-1
Control
Logic
CLKP1
18
I/O0P1- I/O17P1
CLKP1
Port 1
I/O
16
A0P1–A15P1
MKLDP1[4]
CNTLDP1[4]
CCCNNMNTTKTRIRRNSDDCTPPPP1111[[[[4444]]]]
CNTINTINPT1[P41]
Port 1
Counter/
Mask Reg/
Address
Decode
MRST
TMS
TCK
TDI
CLKBIST
Reset
Logic
JTAG
Controller
BIST
TDO
Port 4 Logic Blocks[3]
Port 1
Port 4
16K/32K/64K × 18
QuadPort DSE
Array
Port 2
Port 3
Port 2 Logic Blocks[3]
Port 3 Logic Blocks[3]
Notes:
2. Port 1 Control Logic Block is detailed on page 4.
3. Port 2, Port 3, and Port 4 Logic Blocks are similar to Port 1 Logic Blocks.
4. Counter functionality applies only to CY7C0430BV (64K × 18) device option. These pins are either GND or NC for CY7C04312BV and CY7C04314BV.
Document #: 38-06027 Rev. *A
Page 3 of 37
Share Link: 