ST72C334J4T6 STMicroelectronics, ST72C334J4T6 Datasheet - Page 13

• 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

4 REGISTER & MEMORY MAP
As shown in the
addressing 64K bytes of memories and I/O regis-
ters.
The available memory locations consist of 128
bytes of register locations, 384 or 512 bytes of
RAM, up to 256 bytes of data EEPROM and 4 or
8 Kbytes of user program memory. The RAM
Figure 5. Memory Map
01FFh
0200h / 0280h
E000h
FFDFh
027Fh
C000h
007Fh
0BFFh
0CFFh
BFFFh
FFFFh
0080h
0C00h
0D00h
FFE0h
0000h
Interrupt & Reset Vectors
(see
256 Bytes Data EEPROM
Figure
8K Bytes
Program
Memory
Table 5 on page
HW Registers
512 Bytes RAM
(see
Reserved
Reserved
5, the MCU is capable of
384 Bytes RAM
Table
16K Bytes
Program
Memory
2)
34)
space includes up to 256 bytes for the stack from
0100h to 01FFh.
The highest address bytes contain the user reset
and interrupt vectors.
IMPORTANT: Memory locations marked as “Re-
served” must never be accessed. Accessing a re-
served area can have unpredictable effects on the
device.
ST72334J/N, ST72314J/N, ST72124J
0080h
00FFh
01FFh
01FFh
00FFh
027Fh
C000h
E000h
FFFFh
0100h
0200h
0080h
0100h
16-bit Addressing RAM
16-bit Addressing RAM
Short Addressing RAM
Short Addressing RAM
16-bit Addressing
8 KBytes
(256 Bytes)
(256 Bytes)
(128 Bytes)
(128 Bytes)
Zero page
Zero page
Stack or
Stack or
16 KBytes
RAM
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