參數(shù)資料
型號(hào)： uPSD3233
廠商： 意法半導(dǎo)體
英文描述： Flash Programmable System Device with 8032 Microcontroller Core(嵌入高速“8032微控制器核”的Flash型可編程系統(tǒng)器)
中文描述： 閃存可編程系統(tǒng)器件與8032微控制器內(nèi)核（嵌入高速“8032微控制器核”的閃存型可編程系統(tǒng)器）
文件頁數(shù)： 113/164頁
文件大?。?/td> 1133K
代理商： UPSD3233
113/164
μ
PSD3200 FAMILY
DRAFT(Thursday 20 June 2002, 13:15).
Product Term Allocator
The CPLD has a Product Term Allocator. PSDsoft
uses the Product Term Allocator to borrow and
place product terms from one macrocell to anoth-
er. The following list summarizes how product
terms are allocated:
I
McellAB0-McellAB7 all have three native
product terms and may borrow up to six more
I
McellBC0-McellBC3 all have fournative product
terms and may borrow up to five more
I
McellBC4-McellBC7 all have fournative product
terms and may borrow up to six more.
Each macrocell may only borrow product terms
from certain other macrocells. Product terms al-
ready inuse 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(PSD Module)”, on page
115). The flip-flops in each of the 16 Output Mac-
rocells (OMC) can be loaded from the data bus by
a MCU. Loading the Output Macrocells (OMC)
with datafrom the MCU takes priority over internal
functions. As such, the preset, clear, and clock in-
puts to the flip-flop can be overridden by theMCU.
The ability to load the flip-flops and read them
back is useful in such applications as loadable
counters and shift registers, mailboxes, and hand-
shaking protocols.
Data can be loaded to the Output Macrocells
(OMC) on the trailing edge of Write Strobe (WR,
edge loading) or during the time that Write Strobe
(WR) is active (level loading). The methodof load-
ing is specified in PSDsoft Express Configuration.
Figure 58. CPLD Output Macrocell
PT
ALLOCATOR
MASK
REG.
PT CLK
PT
PT
PT
CLKIN
FEEDBACK(.FB)
PORT INPUT
A
P
MUX
MUX
POLARITY
SELECT
LD
IN
CLR
Q
PR
DIN
COMB/REG
SELECT
PORT
DRIVER
MAINPUT
I/O PIN
MACROCELL
ALLOCATOR
MCU DATA BUS
D[7:0]
DIRECTION
REGISTER
CLEAR (.RE)
PROGRAMMABLE
FF (D/T/JK/SR)
WR
ENABLE (.OE)
PRESET(.PR)
RD
MACROCELL CS
AI06617
相關(guān)PDF資料
PDF描述
uPSD3234(中文) Flash Programmable System Device with 8032 Microcontroller Core(嵌入高速“8032微控制器核”的Flash型可編程系統(tǒng)器)
uPSD3212C(中文) Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM(帶8032微控制器內(nèi)核和16Kbit SRAM的FLASH可編程系統(tǒng)器件)
uPSD3254A(中文) Flash Programmable System Devices with 8032 Microcontroller Core(帶8032微控制器內(nèi)核的FLASH可編程系統(tǒng)器件)
uPSD3254BV(中文) Flash Programmable System Devices with 8032 Microcontroller Core(帶8032微控制器內(nèi)核的FLASH可編程系統(tǒng)器件)
UPSD3234A Flash Programmable System Devices with 8032 Microcontroller Core
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPSD3233A-24T1 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core
UPSD3233A-24T1T 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core
UPSD3233A-24T6 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core
UPSD3233A-24T6T 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core
UPSD3233A-24U1 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core
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