UPSD3422_06 Datasheet, PDF (199/293 Pages) STMicroelectronics – Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic

uPSD34xx
PSD module
Note:
The Flash memories are 16-bit wide when it is in Program Memory space and are 8-bit wide
when it is in the Data Space. When the Flash memory is configured in both “Program
Space” and “Data Space,” the Flash will drive 16-bit in a PSEN cycle and operates as an 8-
bit memory in READ or WRITE cycle.
The SRAM, csiop, and external device are always in 8-bit data space.
Table 105. Data width in different bus cycles
Type of Bus Cycle
Main Flash
Secondary
Flash
SRAM
PSEN Cycle (Program Memory)
Read or Write Cycle (Data Memory)
Flash Programming Cycle (Flash Write
or Reading Status)
16-bit
8-bit
8-bit
16-bit
x
8-bit
8-bit
8-bit
x
CSIOP
External
Device
x
x
8-bit
8-bit
x
x
x = NA
28.4
Runtime control register definitions (csiop)
The 39 csiop registers are defined in Table 106. The 8032 can access each register by the
address offset (specified in Table 106) added to the csiop base address that was specified
in PSDsoft Express. Do not write to unused locations within the csiop block of 256 registers,
they should remain logic zero.
Table 106. CSIOP registers and their offsets (in hexadecimal)
Register
Name
Port A
Port B Port C Port D Other
(80-pin)
Description
Link
Data In
00h 01h 10h 11h
Control
02h 03h
MCU I/O input mode. Read to
obtain current logic level of pins
on Ports A, B, C, or D. No
WRITEs.
Table 122
on
page 228
Selects MCUI/O or Latched
Address Out mode. Logic 0 =
MCU I/O, 1 = 8032 Addr Out.
Write to select mode. Read for
status.
Table 134
on
page 232
Data Out
04h 05h 12h 13h
MCU I/O output mode. Write to
set logic level on pins of Ports
A, B, C, or D. Read to check
status. This register has no
effect if a port pin is driven by
an OMC output from PLD.
Table 126
on
page 229
Direction
06h 07h 14h 15h
MCU I/O mode. Configures
port pin as input or output.
Write to set direction of port
pins.
Logic 1 = out, Logic 0 = in.
Read to check status.
Table 130
on
page 229
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