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參數資料
型號： PSD913520MT
廠商： 意法半導體
英文描述： BBG ECL/TTL CLOCK DRVR; Package: 28 LEAD PLCC; No of Pins: 28; Container: Rail; Qty per Container: 37
中文描述： Flash在系統可編程ISP的外設的8位微控制器
文件頁數： 40/110頁
文件大小： 1737K
代理商： PSD913520MT
PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2
40/110
Input Macrocells (IMC)
The CPLD has 24 Input Macrocells (IMC), one for
each pin on Ports A, B, and C. The architecture of
the Input Macrocells (IMC) is shown in
Figure
17., page 41
. The Input Macrocells (IMC) are indi-
vidually configurable, and can be used as a latch,
register, or to pass incoming Port signals prior to
driving them onto the PLD input bus. The outputs
of the Input Macrocells (IMC) can be read by the
MCU through the internal data bus.
The enable for the latch and clock for the register
are driven by a multiplexer whose inputs are a
product term from the CPLD AND Array or the
MCU Address Strobe (ALE/AS). Each product
term output is used to latch or clock four Input
Macrocells (IMC). Port inputs 3-0 can be con-
trolled by one product term and 7-4 by another.
Configurations for the Input Macrocells (IMC) are
specified by equations written in PSDabel (see Ap-
plication Note
AN1171
). Outputs of the Input Mac-
rocells (IMC) can be read by the MCU via the IMC
buffer.
See
the
section
PORTS, page 51
.
entitled
I/O
Input Macrocells (IMC) can use Address Strobe
(ALE/AS, PD0) to latch address bits higher than
A15. Any latched addresses are routed to the
PLDs as inputs.
Input Macrocells (IMC) are particularly useful with
handshaking communication applications where
two processors pass data back and forth through
a common mailbox.
Figure 18., page 42
shows a
typical configuration where the Master MCU writes
to the Port A Data Out Register. This, in turn, can
be read by the Slave MCU via the activation of the
“Slave-Read” output enable product term.
The Slave can also write to the Port A Input Mac-
rocells (IMC) and the Master can then read the In-
put Macrocells (IMC) directly.
Note that the “Slave-Read” and “Slave-Wr” signals
are product terms that are derived from the Slave
MCU inputs Read Strobe (RD, CNTL1), Write
Strobe (WR, CNTL0), and Slave_CS.
相關PDF資料
PDF描述
PSD913570JIT 1:8 Clock Driver; Package: 28 LEAD PLCC; No of Pins: 28; Container: Tape and Reel; Qty per Container: 500
PSD913570JT 1:9 TTL Clock Driver; Package: 28 LEAD PLCC; No of Pins: 28; Container: Rail; Qty per Container: 37
PSD913570MIT BBG ECL/TTL CLOCK DRVR; Package: 28 LEAD PLCC; No of Pins: 28; Container: Rail; Qty per Container: 37
PSD913570MT 1:9 TTL Clock Driver; Package: 28 LEAD PLCC; No of Pins: 28; Container: Tape and Reel; Qty per Container: 500
PSD913590JIT BBG ECL/TTL CLOCK DRVR; Package: 28 LEAD PLCC; No of Pins: 28; Container: Tape and Reel; Qty per Container: 500
相關代理商/技術參數
參數描述
PSD913570JIT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs
PSD913570JT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs
PSD913570MIT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs
PSD913570MT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs
PSD913590JIT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System Programmable ISP Peripherals For 8-bit MCUs
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