ST72C334N2B6 STMicroelectronics, ST72C334N2B6 Datasheet - Page 24

• Manufacturer Part Number: ST72C334N2B6
• Description: Microcontrollers (MCU) Flash 8K SPI/SCI
• Manufacturer: STMicroelectronics

Specifications of ST72C334N2B6

• 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: 44
• Number Of Timers: 16 bit
• Operating Supply Voltage: 3.2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Package / Case: SDIP-56
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / Rohs Status: No

ST72334J/N, ST72314J/N, ST72124J
4 SUPPLY, RESET AND CLOCK MANAGEMENT
The ST72334J/N, ST72314J/N and ST72124J mi-
crocontrollers include a range of utility features for
securing the application in critical situations (for
example in case of a power brown-out), and re-
ducing the number of external components. An
overview is shown in Figure 12.
Main Features
Figure 12. Clock, Reset and Supply Block Diagram
24/125
Supply Manager with Main supply Low voltage
detection (LVD)
RESET
OSC2
OSC1
MCO
VDD
VSS
OSCILLATOR
RESET SEQUEN CE
MULTI-
(MO)
LOW VOLTAGE
MANAGER
DETECTO R
(RSM)
(LVD)
CLOCK SECUR ITY SYSTE M
CLOCK
FILTER
(CSS)
CRSR
SAFE
OSC
PERIP HERAL
– 4 Crystal/Ceramic resonator oscillators
– 1 External RC oscillator
– 1 Internal RC oscillator
– Clock Filter
– Backup Safe Oscillator
Reset Sequence Manager (RSM)
Multi-Oscillator (MO)
Clock Security System (CSS)
WATCH DOG
0
FROM
0
f
OSC
0
CONTROLLER
MAIN CLOCK
RF
(MCC)
LVD
0
CSS INTER RUPT
IE
CSS
D
WDG
f
RF
CPU