ST72C334J4T6 STMicroelectronics, ST72C334J4T6 Datasheet - Page 18

• Manufacturer Part Number: ST72C334J4T6
• Description: MCU 8BIT FLASH SPI SCI 44TQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72C334J4T6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 3.2 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Processor Series: ST72C3x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 4 bit
• Operating Supply Voltage: 3.2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST7C334-INDART, ST7MDT2-EPB2/US
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-4838

ST72334J/N, ST72314J/N, ST72124J
6 DATA EEPROM
6.1 INTRODUCTION
The Electrically Erasable Programmable Read
Only Memory can be used as a non volatile back-
up for storing data. Using the EEPROM requires a
basic access protocol described in this chapter.
Figure 7. EEPROM Block Diagram
18/153
EECSR
EEPROM INTERRUPT
0
ADDRESS BUS
0
RESERVED
DECODER
ADDRESS
0
0
0
4
IE
EEPROM
DECODER
LAT
DETECTOR
FALLING
ROW
4
4
EDGE
PGM
6.2 MAIN FEATURES
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
128
MULTIPLEXER
DATA
(1 ROW = 16 x 8 BITS)
MEMORY MATRIX
HIGH VOLTAGE
EEPROM
DATA BUS
PUMP
DATA LATCHES
128
16 x 8 BITS