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参数资料
型号： PSD813F4-15JI
厂商： STMICROELECTRONICS
元件分类： 微控制器/微处理器
英文描述： 128K X 8 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQCC52
封装： PLASTIC, LCC-52
文件页数： 33/103页
文件大小： 1180K
代理商： PSD813F4-15JI
35/103
PSD8XXF2/3/4/5
Product Term Allocator
The CPLD has a Product Term Allocator. The PS-
Dabel compiler uses the Product Term Allocator to
borrow and place product terms from one macro-
cell to another. The following list summarizes how
product terms are allocated:
s
McellAB0-McellAB7 all have three native
product terms and may borrow up to six more
s
McellBC0-McellBC3 all have four native product
terms and may borrow up to five more
s
McellBC4-McellBC7 all have four native product
terms and may borrow up to six more.
Each macrocell may only borrow product terms
from certain other macrocells. Product terms al-
ready in use by one macrocell are not available for
another macrocell.
If an equation requires more product terms than
are available to it, then “external” product terms
are required, which consume other Output Macro-
cells (OMC). If external product terms are used,
extra delay is added for the equation that required
the extra product terms.
This is called product term expansion. PSDsoft
Express performs this expansion as needed.
Loading and Reading the Output Macrocells
(OMC). The Output Macrocells (OMC) block oc-
cupies a memory location in the MCU address
space, as defined by the CSIOP block (see the
section entitled “I/O PORTS”, on page 48). The
flip-flops in each of the 16 Output Macrocells
(OMC) can be loaded from the data bus by a MCU.
Loading the Output Macrocells (OMC) with data
from the MCU takes priority over internal func-
tions. As such, the preset, clear, and clock inputs
to the flip-flop can be overridden by the MCU. The
ability to load the flip-flops and read them back is
useful in such applications as loadable counters
and shift registers, mailboxes, and handshaking
protocols.
Data can be loaded to the Output Macrocells
(OMC) on the trailing edge of Write Strobe (WR,
CNTL0) (edge loading) or during the time that
Write Strobe (WR, CNTL0) is active (level load-
ing). The method of loading is specified in PSDsoft
Express Configuration.
相关PDF资料
PDF描述
PSD813F4-15J 128K X 8 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQCC52
PSD813F4-70M 128K X 8 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQFP52
PIC16C57C-04E/SS 8-BIT, OTPROM, 4 MHz, RISC MICROCONTROLLER, PDSO28
PIC16LC55A-04/SP 8-BIT, OTPROM, 4 MHz, RISC MICROCONTROLLER, PDIP28
PIC16LC57CT-04/SS 8-BIT, OTPROM, 4 MHz, RISC MICROCONTROLLER, PDSO28
相关代理商/技术参数
参数描述
PSD813F4A-90J 功能描述:SPLD - 简单可编程逻辑器件 U 511-PSD813F2A-90J RoHS:否 制造商:Texas Instruments 逻辑系列:TICPAL22V10Z 大电池数量:10 最大工作频率:66 MHz 延迟时间:25 ns 工作电源电压:4.75 V to 5.25 V 电源电流:100 uA 最大工作温度:+ 75 C 最小工作温度:0 C 安装风格:Through Hole 封装 / 箱体:DIP-24
PSD813F4A-90M 功能描述:SPLD - 简单可编程逻辑器件 U 511-PSD813F2A-90M RoHS:否 制造商:Texas Instruments 逻辑系列:TICPAL22V10Z 大电池数量:10 最大工作频率:66 MHz 延迟时间:25 ns 工作电源电压:4.75 V to 5.25 V 电源电流:100 uA 最大工作温度:+ 75 C 最小工作温度:0 C 安装风格:Through Hole 封装 / 箱体:DIP-24
PSD813F4VA-15J 功能描述:SPLD - 简单可编程逻辑器件 U 511-PSD813F2VA-15J RoHS:否 制造商:Texas Instruments 逻辑系列:TICPAL22V10Z 大电池数量:10 最大工作频率:66 MHz 延迟时间:25 ns 工作电源电压:4.75 V to 5.25 V 电源电流:100 uA 最大工作温度:+ 75 C 最小工作温度:0 C 安装风格:Through Hole 封装 / 箱体:DIP-24
PSD813F4VA-15U 功能描述:SPLD - 简单可编程逻辑器件 U 511-PSD813F2VA-15U RoHS:否 制造商:Texas Instruments 逻辑系列:TICPAL22V10Z 大电池数量:10 最大工作频率:66 MHz 延迟时间:25 ns 工作电源电压:4.75 V to 5.25 V 电源电流:100 uA 最大工作温度:+ 75 C 最小工作温度:0 C 安装风格:Through Hole 封装 / 箱体:DIP-24
PSD813F5-12JI 制造商:WSI 功能描述:
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