psd934f2v-20mi STMicroelectronics, psd934f2v-20mi Datasheet - Page 53
psd934f2v-20mi
Manufacturer Part Number
psd934f2v-20mi
Description
Flash In-system Programmable Isp Peripherals For 8-bit Mcus
Manufacturer
STMicroelectronics
Datasheet
1.PSD934F2V-20MI.pdf
(94 pages)
- Current page: 53 of 94
- Download datasheet (553Kb)
Preliminary Information
The
PSD9XX
Functional
Blocks
(cont.)
9.4.4 Port Data Registers
The Port Data Registers, shown in Table 28, are used by the microcontroller to write data
to or read data from the ports. Table 28 shows the register name, the ports having each
register type, and microcontroller access for each register type. The registers are
described below.
9.4.4.1 Data In
Port pins are connected directly to the Data In buffer. In MCU I/O input mode, the pin input
is read through the Data In buffer.
9.4.4.2 Data Out Register
Stores output data written by the MCU in the MCU I/O output mode. The contents of the
Register are driven out to the pins if the Direction Register or the output enable
product term is set to “1”. The contents of the register can also be read back by the
microcontroller.
Table 28. Port Data Registers
9.4.5 Ports A and B – Functionality and Structure
Ports A and B have similar functionality and structure, as shown in Figure 20. The two
ports can be configured to perform one or more of the following functions:
Data In
Data Out
Register Name
MCU I/O Mode
GPLD Output – Combinatorial PLD outputs can be connected to Port A or Port B.
PLD Input
Latched Address output – Provide latched address output per Table 30.
Address In – Additional high address inputs, may be latched by ALE.
Open Drain/Slew Rate – pins PA[3:0] and PB[3:0] can be configured to fast slew rate,
Data Port – Port A only, connect to non-multiplexed 8-bit data bus.
– Input to the PLDs.
A,B,C,D
A,B,C,D
Port
pins PA[7:4] and PB[7:4] can be configured to Open Drain
Mode.
Read – input on pin
Write/Read
MCU Access
PSD9XX Family
49
Related parts for psd934f2v-20mi
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
SPLD - Simple Programmable Logic Devices 3.3V 2M 150ns
Manufacturer:
STMicroelectronics
Part Number:
Description:
PSD934F2-15MFlash In-System Programmable ISP Peripherals For 8-bit MCUs
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
SPLD - Simple Programmable Logic Devices 5V 2M 90ns
Manufacturer:
STMicroelectronics
Part Number:
Description:
SPLD - Simple Programmable Logic Devices PLCC-52 5V 2M 90NS
Manufacturer:
STMicroelectronics
Part Number:
Description:
SPLD - Simple Programmable Logic Devices 5V 2M 150ns
Manufacturer:
STMicroelectronics
Part Number:
Description:
STMicroelectronics [RIPPLE-CARRY BINARY COUNTER/DIVIDERS]
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
STMicroelectronics [LIQUID-CRYSTAL DISPLAY DRIVERS]
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
BOARD EVAL FOR MEMS SENSORS
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
NPN TRANSISTOR POWER MODULE
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
TURBOSWITCH ULTRA-FAST HIGH VOLTAGE DIODE
Manufacturer:
STMicroelectronics
Datasheet: