UPSD3354DV-40U6 Datasheet, PDF (24/272 Pages) STMicroelectronics – fast 8032 MCU with programmable logic

Pin descriptions
UPSD33xx
Table 2. Pin definitions (continued)
Port pin
Signal
name
80-Pin 52-Pin
num. num.⁽¹⁾
In/Out
Basic
Function
Alternate 1
Alternate 2
SPITXD
P4.6
19
15
TCM5
I/O
General I/O port
pin
PCA1-TCM5
SPI Transmit
(SPITxD)
SPISEL
P4.7
PCACL ¹⁸
14
K1
I/O
General I/O port
pin
PCACLK1
SPI Slave Select
(SPISEL)
AV_REF
70
N/A
Reference voltage
input for ADC.
I
Connect AV_REF to
V_CC if the ADC is
not used.
RD
) _WR
ct(s _PSEN
rodu ^ALE
te ^{P RESET_IN}
ole ^XTAL1
bs _XTAL2
Obsolete ^{Product(s) - O DEBUG}
65
N/A
62
N/A
63
N/A
4
N/A
68
44
48
31
49
32
8
5
O
READ Signal,
external bus
O
WRITE Signal,
external bus
O
PSEN Signal,
external bus
O
Address Latch
signal, external bus
I
Active low reset
input
I
Oscillator input pin
for system clock
O
Oscillator output
pin for system clock
I/O
I/O to the MCU
debug unit
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Doc ID 9685 Rev 7