參數(shù)資料
型號(hào)： PSD4235G3-A-15B81
廠商： 意法半導(dǎo)體
英文描述： CAP 47UF 6.3V 20% TANT SMD-3216-18 TR-13-PL SN100%
中文描述： Flash在系統(tǒng)可編程ISP的外設(shè)的16位微控制器5V電源
文件頁(yè)數(shù)： 34/89頁(yè)
文件大小： 703K
代理商： PSD4235G3-A-15B81
PSD4235G2
34/89
COMPLEX PLD (CPLD)
The CPLD can be used to implement system logic
functions, such as loadable counters and shift reg-
isters, system mailboxes, handshaking protocols,
state machines, and random logic. The CPLD can
also be used to generate eight External Chip Se-
lect (ECS0-ECS7), routed to Port C or Port F.
Although External Chip Select (ECS0-ECS7) can
be produced by any Output Macrocell (OMC),
these eight External Chip Select (ECS0-ECS7) on
Port C or Port F do not consume any Output Mac-
rocells (OMC).
As shown in Figure 12, the CPLD has the following
blocks:
I
24 Input Macrocells (IMC)
I
16 Output Macrocells (OMC)
I
Product Term Allocator
I
AND Array capable of generating up to 196
product terms
I
Four I/O Ports.
Each of the blocks are described in the sections
that follow.
The Input Macrocells (IMC) and Output Macrocells
(OMC) are connected to the PSD internal data bus
and can be directly accessed by the MCU. This
enables the MCU software to load data into the
Output Macrocells (OMC) or read data from both
the Input and Output Macrocells (IMC and OMC).
This feature allows efficient implementation of sys-
tem logic and eliminates the need to connect the
data bus to the AND Array as required in most
standard PLD macrocell architectures.
Figure 14. Macrocell and I/O Port
I/O PORTS
CPLD MACROCELLS
INPUT MACROCELLS
LATCHED
ADDRESS OUT
MUX
M
M
M
M
D
D
Q
Q
Q
G
D
Q D
WR
WR
PDR
DATA
PALLOCATOR
DIR
SELECT
INPUT
PFROM OTHER
MACROCELLS
POLARITY
PROUP TO 10
CLOCK
PR
DI LD
D/T
CK
CL
Q
SELECT
PT CLEAR
PT
GLOBAL
PT OUTPUT ENABLE (OE)
MACROCELL FEEDBACK
I/O PORT INPUT
ALE/AS
PT INPUT LATCH GATE/CLOCK
MCU LOAD
PT PRESET
MCU DATA IN
/REG
SELECT
P
P
MCU ADDRESS / DATA BUS
MOUT TO
MCU
CDATA
A
CPLD OUTPUT
I/O PIN
AI04945
相關(guān)PDF資料
PDF描述
PSD4235G3-A-15B81I Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235G3-A-15J Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235G3-A-15JI CAP 0.68UF 20V 10% TANT SMD-3216-18 TR-13-PL GOLD
PSD4235G3-A-15M CAP 0.68UF 20V 10% TANT SMD-3216-18 TR-13-PL SN/PB5%
PSD4235G3-A-15MI CAP 0.68UF 20V 10% TANT SMD-3216-18 TR-13-PL SN100%
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