Figure 60. peripheral i/o mode, Table 89. port operating modes, Table 90. port operating mode settings – ST & T UPSD3212C User Manual
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uPSD3212A, uPSD3212C, uPSD3212CV
Figure 60. Peripheral I/O Mode
Table 89. Port Operating Modes
Note: 1. JTAG pins (TMS, TCK, TDI, TDO) are dedicated pins.
2. Port A is not available in the 52-pin package.
3. On pins PC2, PC3, PC4 and PC7 only.
Table 90. Port Operating Mode Settings
Note: N/A = Not Applicable
Note: 1. 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.
Table 91. I/O Port Latched Address Output Assignments
Port Mode
Port A
(2)
Port B
Port C
Port D
MCU I/O
Yes
Yes
Yes
Yes
PLD I/O
McellAB Outputs
McellBC Outputs
Additional Ext. CS Outputs
PLD Inputs
Yes
No
No
Yes
Yes
Yes
No
Yes
No
Yes
(3)
No
Yes
No
No
Yes
Yes
Address Out
Yes (A7 – 0)
Yes (A7 – 0)
No
No
Peripheral I/O
Yes
No
No
No
JTAG ISP
No
No
Yes
(1)
No
Mode
Defined in PSDsoft
Control Register
Setting
Direction Register
Setting
VM Register Setting
MCU I/O
Declare pins only
0
1 = output,
0 = input (Note 1)
N/A
PLD I/O
Logic equations
N/A
(Note
1)
N/A
Address Out
(Port A,B)
Declare pins only
1
1 (Note 1)
N/A
Peripheral I/O
(Port A)
Logic equations
(PSEL0 & 1)
N/A
N/A
PIO Bit = 1
Port A (PA3-PA0)
Port A (PA7-PA4)
Port B (PB3-PB0)
Port B (PB7-PB4)
Address
a3-a0 Address
a7-a4 Address
a3-a0 Address
a7-a4
RD
PSEL0
PSEL1
PSEL
VM REGISTER BIT 7
WR
PA0 - PA7
D0 - D7
DATA BUS
AI02886