ST72T631K4M1 STMicroelectronics, ST72T631K4M1 Datasheet - Page 9

• Manufacturer Part Number: ST72T631K4M1
• Description: Microcontrollers (MCU) OTP EPROM 16K USB/SC
• Manufacturer: STMicroelectronics

Specifications of ST72T631K4M1

• Data Bus Width: 8 bit
• Program Memory Type: EPROM
• Program Memory Size: 16 KB
• Data Ram Size: 512 B
• Interface Type: I2C, SCI, USB
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 19
• Number Of Timers: 2
• Operating Supply Voltage: 4 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: SO-34
• Minimum Operating Temperature: 0 C
• On-chip Adc: 8 bit
• Lead Free Status / Rohs Status: No

1.3 EXTERNAL CONNECTIONS
The following figure shows the recommended ex-
ternal connections for the device.
The V
and EPROM devices and must be tied to ground in
user mode.
The 10 nF and 0.1 µF decoupling capacitors on
the power supply lines are a suggested EMC per-
formance/cost tradeoff.
Figure 4. Recommended External Connections
PP
pin is only used for programming OTP
Optional if Low Voltage
Detector (LVD) is used
EXTERNAL RESET CIRCUIT
V
DD
Or configure unused I/O ports
by software as input with pull-up
10nF
+
V
DD
0.1µF
0.1µF
V
DD
0.1µF
10K
See
Clocks
Section
4.7K
The external reset network is intended to protect
the device against parasitic resets, especially in
noisy environments.
Unused I/Os should be tied high to avoid any un-
necessary power consumption on floating lines.
An alternative solution is to program the unused
ports as inputs with pull-up.
V
V
V
RESET
Unused I/O
OSCOUT
OSCIN
PP
DD
SS
ST7263
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