參數(shù)資料
型號(hào)： PSD4235F3V-90M
廠商： 意法半導(dǎo)體
英文描述： Flash In-System-Programmable Peripherals for 16-Bit MCUs
中文描述： Flash在系統(tǒng)可編程外設(shè)的16位微控制器
文件頁(yè)數(shù)： 39/93頁(yè)
文件大小： 503K
代理商： PSD4235F3V-90M
MCU
CNTL0
CNTL1
CNTL2
PD3
PD0**
ADIO0
PF3-PF0
68302, 68306
MMC2001
68330, 68331
68332, 68340
68LC302,
MMC2001
68HC16
68HC912
68HC812***
80196
80196SP
80186
80C161
80C164-80C167
80C51XA
H8/3044
M37702M2
R/W
LDS
UDS
*
AS
–
*
R/W
DS
SIZ0
*
AS
A0
*
WEL
OE
WEH
AS
–
*
R/W
R/W
R/W
WR
WRL
WR
DS
E
E
RD
RD
RD
SIZ0
LSTRB
LSTRB
BHE
*
BHE
*
AS
E
*
ALE
ALE
ALE
A0
A0
A0
A0
A0
A0
*
*
*
*
*
*
*
DBE
*
*
WRH
*
*
WR
RD
BHE
ALE
A0
WRL
WRL
R/W
RD
RD
E
PSEN
*
BHE
WRH
WRH
*
ALE
AS
ALE
A4/D0
A0
A0
A3-A1
–
*
PSD4000 Series
Preliminary Information
36
The
PSD4000
Functional
Blocks
(cont.)
9.3 Microcontroller Bus Interface
The
“
no-glue logic
”
PSD4000 Microcontroller Bus Interface can be directly connected to
most popular microcontrollers and their control signals. Key 16-bit microcontrollers with
their bus types and control signals are shown in Table 14. The MCU interface type is
specified using the PSDsoft.
Table 14. Microcontrollers and their Control Signals
**
*
Unused CNTL2 pin can be configured as GPLD input. Other unused pins (PD3-0, PF3-0) can be
***
configured for other I/O functions.
*
**
ALE/AS input is optional for microcontrollers with a non-multiplexed bus.
***
This configuration is for 68C812A4_EC at 5MHz, 3V only.
9.3.1. PSD4000 Interface to a Multiplexed Bus
Figure 16 shows an example of a system using a microcontroller with a 16-bit multiplexed
bus and a PSD4000. The ADIO port on the PSD4000 is connected directly to the
microcontroller address/data bus. ALE latches the address lines internally. Latched
addresses can be brought out to Port E, F or G. The PSD4000 drives the ADIO data bus
only when one of its internal resources is accessed and the RD input is active. Should the
system address bus exceed sixteen bits, Ports A, B, C, or F may be used as additional
address inputs.
9.3.2. PSD4000 Interface to a Non-Multiplexed Bus
Figure 17 shows an example of a system using a microcontroller with a 16-bit
non-multiplexed bus and a PSD4000. The address bus is connected to the ADIO Port, and
the data bus is connected to Port F and G. Port F and G are in tri-state mode when the
PSD4000 is not accessed by the microcontroller. Should the system address bus exceed
sixteen bits, Ports A, B or C may be used for additional address inputs.
相關(guān)PDF資料
PDF描述
PSD4235F3V-90MI Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235F3V-90U Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235F3V-90UI Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235F3V-A-12B81I Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235F3V-A-12J Flash In-System-Programmable Peripherals for 16-Bit MCUs
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