ST72C334N2T6 STMicroelectronics, ST72C334N2T6 Datasheet - Page 43

• Manufacturer Part Number: ST72C334N2T6
• Description: Microcontrollers (MCU) Flash 8K SPI/SCI
• Manufacturer: STMicroelectronics

Specifications of ST72C334N2T6

• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 8 KB
• Data Ram Size: 384 B
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 16 bit
• Operating Supply Voltage: 3.2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TQFP-64
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / Rohs Status: In Transition

I/O PORTS (Cont’d)
Figure 32. I/O Block Diagram
Table 8. Port Mode Options
Legend:NI - not implemented
Input
Output
EXTERNAL
INTERRUPT
SOURCE (EIx)
Off - implemented not activated
On - implemented and activated
DDR SEL
OR SEL
DR SEL
Floating with/without Interrupt
Pull-up with/without Interrupt
Push-pull
Open Drain (logic level)
True Open Drain
Configuration Mode
DDR
OR
DR
POLARITY
SELECTION
ALTERNATE
OUTPUT
ALTERNATE
ENABLE
If implemented
1
0
FROM
OTHER
BITS
1
0
Pull-Up
Off
On
Off
NI
Note: the diode to V
true open drain pads. A local protection between
the pad and V
vice against positive stress.
ST72334J/N, ST72314J/N, ST72124J
N-BUFFER
PULL-UP
CONDITION
P-Buffer
Off
On
Off
NI
SS
SCHMITT
TRIGGER
CMOS
is implemented to protect the de-
V
DD
DD
NI (see note)
is not implemented in the
to V
On
DD
P-BUFFER
(see table below)
V
Diodes
DD
DIODES
(see table below)
PULL-UP
(see table below)
ALTERNATE
ANALOG
to V
INPUT
INPUT
On
PAD
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