參數資料
型號： CY37256VP208-66NI
英文描述： Electrically-Erasable Complex PLD
中文描述： 電可擦除復雜可編程邏輯器件
文件頁數： 5/62頁
文件大小： 1782K
代理商： CY37256VP208-66NI
Ultra37000 CPLD Family
Document #: 38-03007 Rev. *C
Page 5 of 62
The buried macrocell also supports input register capability.
The buried macrocell can be configured to act as an input
register (D-type or latch) whose input comes from the I/O pin
associated with the neighboring macrocell. The output of all
buried macrocells is sent directly to the PIM regardless of its
configuration.
I/O Macrocell
Figure 2
illustrates the architecture of the I/O macrocell. The
I/O macrocell supports the same functions as the buried
macrocell with the addition of I/O capability. At the output of the
macrocell, a polarity control mux is available to select active
LOW or active HIGH signals. This has the added advantage
of allowing significant logic reduction to occur in many appli-
cations.
The Ultra37000 macrocell features a feedback path to the PIM
separate from the I/O pin input path. This means that if the
macrocell is buried (fed back internally only), the associated
I/O pin can still be used as an input.
Bus Hold Capabilities on all I/Os
Bus-hold, which is an improved version of the popular internal
pull-up resistor, is a weak latch connected to the pin that does
not degrade the device’s performance. As a latch, bus-hold
maintains the last state of a pin when the pin is placed in a
high-impedance state, thus reducing system noise in bus-
interface applications. Bus-hold additionally allows unused
device pins to remain unconnected on the board, which is
particularly useful during prototyping as designers can route
new signals to the device without cutting trace connections to
V
CC
or GND. For more information, see the application note
“Understanding Bus-Hold — A Feature of Cypress CPLDs.”
Programmable Slew Rate Control
Each output has a programmable configuration bit, which sets
the output slew rate to fast or slow. For designs concerned with
meeting FCC emissions standards the slow edge provides for
lower system noise. For designs requiring very high perfor-
mance the fast edge rate provides maximum system perfor-
mance.
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相關代理商/技術參數
參數描述
CY37256VP208-66NXC 功能描述:IC CPLD 256 MACROCELL 208BQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - CPLD（復雜可編程邏輯器件） 系列:Ultra37000™ 標準包裝:24 系列:CoolRunner II 可編程類型:系統(tǒng)內可編程 最大延遲時間 tpd(1):7.1ns 電壓電源 - 內部:1.7 V ~ 1.9 V 邏輯元件/邏輯塊數目:24 宏單元數:384 門數:9000 輸入/輸出數:173 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:208-BFQFP 供應商設備封裝:208-PQFP（28x28） 包裝:托盤
CY37256VP208-66NXI 功能描述:IC CPLD 256 MACROCELL 208BQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - CPLD（復雜可編程邏輯器件） 系列:Ultra37000™ 標準包裝:24 系列:CoolRunner II 可編程類型:系統(tǒng)內可編程 最大延遲時間 tpd(1):7.1ns 電壓電源 - 內部:1.7 V ~ 1.9 V 邏輯元件/邏輯塊數目:24 宏單元數:384 門數:9000 輸入/輸出數:173 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:208-BFQFP 供應商設備封裝:208-PQFP（28x28） 包裝:托盤
CY37256VP256-100BBC 制造商:Rochester Electronics LLC 功能描述: 制造商:Cypress Semiconductor 功能描述:
CY37256VP256-100BGC 功能描述:CPLD - 復雜可編程邏輯器件 256 Macrocell 5V COM RoHS:否 制造商:Lattice 系列: 存儲類型:EEPROM 大電池數量:128 最大工作頻率:333 MHz 延遲時間:2.7 ns 可編程輸入/輸出端數量:64 工作電源電壓:3.3 V 最大工作溫度:+ 90 C 最小工作溫度:0 C 封裝 / 箱體:TQFP-100
CY37256VP256-66BBC 功能描述:CPLD - 復雜可編程邏輯器件 256 Macrocell 5V COM RoHS:否 制造商:Lattice 系列: 存儲類型:EEPROM 大電池數量:128 最大工作頻率:333 MHz 延遲時間:2.7 ns 可編程輸入/輸出端數量:64 工作電源電壓:3.3 V 最大工作溫度:+ 90 C 最小工作溫度:0 C 封裝 / 箱體:TQFP-100
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