ST72T331N2T6 STMicroelectronics, ST72T331N2T6 Datasheet - Page 33

• Manufacturer Part Number: ST72T331N2T6
• Description: 8-bit Microcontrollers - MCU OTP EPROM 8K SPI/SCI
• Manufacturer: STMicroelectronics

Specifications of ST72T331N2T6

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: ST7
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 16 MHz
• Program Memory Size: 8 KB
• Data Ram Size: 384 B
• On-chip Adc: Yes
• Package / Case: TQFP-64
• Mounting Style: SMD/SMT
• A/d Bit Size: 8 bit
• A/d Channels Available: 8
• Interface Type: SCI, SPI
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 44
• Number Of Timers: 2
• On-chip Dac: No
• Program Memory Type: EPROM
• Factory Pack Quantity: 90
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 3.5 V

5.2 EEPROM (EEP)
5.2.1 Introduction
The Electrically Erasable Programmable Read
Only Memory is used to store data that need a non
volatile back-up. The use of the EEPROM requires
a basic protocol described in this chapter.
Figure 22. EEPROM Block Diagram
REQUEST
INTERRUPT
EEPCR
ADDRESS
BUS
RESERVED
DETECTOR
FALLING
EDGE
DECODER
ADDRESS
E2ITE E2LAT E2PGM
4
12
MULTIPLEXER
DECODER
DATA
ROW
5.2.2 Main Features
128
8
Up to 16 bytes programmed in the same cycle
EEPROM mono-voltage (charge pump)
Chained erase and programming cycles
Internal control of the global programming cycle
duration
End of programming cycle interrupt flag
WAIT mode management
4
.
.
.
.
.
.
BUFFER
HIGH VOLTAGE PUMP
1 ROW = 16 * 8 BITS
DATA LATCHES
MEMORY
EEPROM
MATRIX
16*8 BITS
ST72E331 ST72T331
8
128
DATA
BUS
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