PSD835G2
PSD8XX Family
Pin*
(TQFP
Pin Name Pkg.)
PA0-PA7 51-58
Table 5.
PSD835G2
Pin
Descriptions
(cont.)
Type
I/O
CMOS
or Open
Drain
I/O
CMOS
or Open
Drain
I/O
CMOS
or Slew
Rate
I/O
CMOS
or Open
Drain
Description
Port A, PA0-7. This port is pin configurable and has multiple
functions:
1. MCU I/O 鈥?standard output or input port
2. CPLD Micro鈬擟ell (MCell A0-7) output.
3. Latched, transparent or registered PLD input.
Port B, PB0-7. This port is pin configurable and has multiple
functions:
1. MCU I/O 鈥?standard output or input port.
2. CPLD Micro鈬擟ell (MCell B0-7) output.
3. Latched, transparent or registered PLD input.
Port C, PC0-7. This port is pin configurable and has multiple
functions:
1. MCU I/O 鈥?standard output or input port.
2. External chip select (ECS0-7) output.
3. Latched, transparent or registered PLD input.
Port D pin PD0 can be configured as:
1. ALE or AS input 鈥?latches addresses on ADIO0-15 pins
2. AS input 鈥?latches addresses on ADIO0-15 pins on the
rising edge.
3. Input to the PLD.
4. Transparent PLD input.
Port D pin PD1 can be configured as:
1. MCU I/O
2. Input to the PLD.
3. CLKIN clock input 鈥?clock input to the CPLD
Micro鈬擟ells, the APD power down counter and CPLD
AND Array.
Port D pin PD2 can be configured as:
1. MCU I/O
2. Input to the PLD.
3. CSI input 鈥?chip select input. When low, the CSI enables
the internal PSD memories and I/O. When high, the
internal memories are disabled to conserve power. CSI
trailing edge can get the part out of power-down mode.
Port D pin PD3 can be configured as:
1. MCU I/O
2. Input to the PLD.
Port E, PE0. This port is pin configurable and has multiple
functions:
1. MCU I/O 鈥?standard output or input port.
2. Latched address output.
3. TMS input for JTAG/ISP interface.
Port E, PE1. This port is pin configurable and has multiple
functions:
1. MCU I/O 鈥?standard output or input port.
2. Latched address output.
3. TCK input for JTAG/ISP interface (Schmidt Trigger).
Port E, PE2. This port is pin configurable and has multiple
functions:
1. MCU I/O 鈥?standard output or input port.
2. Latched address output.
3. TDI input for JTAG/ISP interface.
PB0-PB7 61-68
PC0-PC7 41-48
PD0
79
PD1
80
I/O
CMOS
or Open
Drain
PD2
1
I/O
CMOS
or Open
Drain
PD3
2
I/O
CMOS
or Open
Drain
I/O
CMOS
or Open
Drain
I/O
CMOS
or Open
Drain
I/O
CMOS
or Open
Drain
PE0
71
PE1
72
PE2
73
9