psd934f2v-20mi STMicroelectronics, psd934f2v-20mi Datasheet - Page 15

• Manufacturer Part Number: psd934f2v-20mi
• Description: Flash In-system Programmable Isp Peripherals For 8-bit Mcus
• Manufacturer: STMicroelectronics

Preliminary Information
Table 5.
PSD9XX
Pin
Descriptions
(cont.)
Pin Name Pin* Type
CNTL2
Reset
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0
PC1
(PLCC)
29
28
27
25
24
23
22
21
52
51
20
19
49
48
7
6
5
4
3
2
I/O
I/O
I/O
I/O
I
I
This pin can be used to input the PSEN (Program Select
Enable) signal from any MCU that uses this signal for code
exclusively. If your MCU does not output a Program Select
Enable signal, this port can be used as a generic input. This
port is connected to the PLDs.
Active low reset input. Resets I/O Ports and some of the
configuration registers. Must be active at power up.
These pins make up Port A. These port pins are configurable
and can have the following functions:
1. MCU I/O — write to or read from a standard output or
2. General Purpose PLD outputs.
3. Inputs to the PLDs.
4. Latched address outputs (see Table 6).
5. Address inputs. For example, PA0-3 could be used for
6. As the data bus inputs D[0:7] for non-multiplexed
7. D0/A16-D3/A19 in M37702M2 mode.
Note: PA0-3 can only output CMOS signals with an option
for high slew rate. However, PA4-7 can be configured as
CMOS or Open Drain Outputs.
These pins make up Port B. These port pins are configurable
and can have the following functions:
1. MCU I/O — write to or read from a standard output or
2. General Purpose PLD outputs.
3. Inputs to the PLDs.
4. Latched address outputs (see Table 6).
Note: PB0-3 can only output CMOS signals with an option
for high slew rate. However, PB4-7 can be configured as
CMOS or Open Drain Outputs.
PC0 pin of Port C. This port pin can be configured to have
the following functions:
1. MCU I/O — write to or read from a standard output or
2. Input to the PLDs.
3. TMS Input for the JTAG Interface.
This pin can be configured as a CMOS or Open Drain output.
PC1 pin of Port C. This port pin can be configured to have
the following functions:
1. MCU I/O — write to or read from a standard output or
2. Input to the PLDs.
3. TCK Input for the JTAG Interface.
This pin can be configured as a CMOS or Open Drain output.
input port.
A[0:3] when using an 80C51XA in burst mode.
address/data bus MCUs.
input port.
input port.
input port.
Description
PSD9XX Family
11