參數(shù)資料
型號(hào): PSD854F2A-90MT
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 256K X 8 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQFP52
封裝: ROHS COMPLIANT, PLASTIC, QFP-52
文件頁數(shù): 97/128頁
文件大?。?/td> 1045K
代理商: PSD854F2A-90MT
I/O ports
PSD8XXFX
Doc ID 7833 Rev 7
Address Out
Yes (A7 – 0)
or (A15 – 8)
No
Address In
Yes
Data port
Yes (D7 – 0)
No
Peripheral I/O
Yes
No
JTAG ISP
No
Yes(1)
No
1.
Can be multiplexed with other I/O functions.
Table 20.
Port operating modes (continued)
Port mode
Port A
Port B
Port C
Port D
Table 21.
Port operating mode settings
Mode
Defined in
PSDabel
Defined in PSD
configuration
Control
register
setting
Direction
register
setting
VM
register
setting
JTAG Enable
MCU I/O
Declare pins only
N/A(1)
0
1 = output,
0 = input(2)
N/A
PLD I/O
Logic equations
N/A
N/A
Data port (Port A)
N/A
Specify bus type
N/A
Address Out
(Port A,B)
Declare pins only
N/A
1
N/A
Address In
(Port A,B,C,D)
Logic for equation
input macrocells
N/A
Peripheral I/O
(Port A)
Logic equations
(PSEL0 & 1)
N/A
PIO bit = 1
N/A
JTAG ISP(3)
JTAGSEL
JTAG
Configuration
N/A
JTAG_Enable
1.
N/A = Not Applicable
2.
The direction of the port A,B,C, and D pins are controlled by the Direction register ORed with the individual output enable
product term (.oe) from the CPLD AND Array.
3.
Any of these three methods enables the JTAG pins on port C.
Table 22.
I/O port Latched address output assignments
MCU
Port A (PA3-PA0)
Port A (PA7-PA4)
Port B (PB3-PB0)
Port B (PB7-PB4)
8051XA (8-Bit)
N/A(1)
Address a7-a4
Address a11-a8
N/A
80C251
(Page mode)
N/A
Address a11-a8
Address a15-a12
All Other
8-Bit Multiplexed
Address a3-a0
Address a7-a4
Address a3-a0
Address a7-a4
8-Bit
Non-Multiplexed bus
N/A
Address a3-a0
Address a7-a4
1.
N/A = Not Applicable
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