ST72T331N2T6 STMicroelectronics, ST72T331N2T6 Datasheet - Page 5

• 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

1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The ST72T331 HCMOS Microcontroller Unit
(MCU) is a member of the ST7 family. The device
is based on an industry-standard 8-bit core and
features an enhanced instruction set. The device
is normally operated at a 16 MHz oscillator fre-
quency. Under software control, the ST72T331
may be placed in either Wait, Slow or Halt modes,
thus reducing power consumption. The enhanced
instruction set and addressing modes afford real
programming potential. In addition to standard
8-bit data management, the ST72T331 features
true bit manipulation, 8x8 unsigned multiplication
and indirect addressing modes on the whole mem-
ory. The device includes a low consumption and
Figure 1. ST72T331 Block Diagram
PF0 -> PF2,4,6,7
OSCOUT
(6 bits)
RESET
OSCIN
V
V
DD
SS
(384 - 512 Bytes)
(8 - 16K Bytes)
8-BIT CORE
(256 Bytes)
CONTROL
PROGRAM
AND LVD
TIMER A
MEMORY
EEPROM
POWER
SUPPLY
PORT F
RAM
ALU
OSC
Internal
CLOCK
fast start on-chip oscillator, CPU, program memo-
ry (OTP/EPROM versions), EEPROM, RAM, 44
(QFP64 and SDIP56) or 32 (QFP44 and SDIP42)
I/O lines, a Low Voltage Detector (LVD) and the
following on-chip peripherals: Analog-to-Digital
converter (ADC) with 8 (QFP64, SDIP56) or 6
(QFP44, SDIP42) multiplexed analog inputs, in-
dustry standard synchronous SPI and asynchro-
nous SCI serial interfaces, digital Watchdog, two
independent 16-bit Timers, one featuring an Exter-
nal Clock Input, and both featuring Pulse Genera-
tor capabilities, 2 Input Captures and 2 Output
Compares (only 1 Input Capture and 1 Output
Compare on Timer A).
WATCHDOG
8-BIT ADC
TIMER B
PORT C
PORT D
PORT E
PORT A
PORT B
SPI
SCI
ST72E331 ST72T331
(2 bits for ST72T331J)
(8 bits for ST72T331N)
(6 bits for ST72T331N)
(5 bits for ST72T331J)
(8 bits for ST72T331N)
(8 bits for ST72T331N)
(5 bits for ST72T331J)
(6 bits for ST72T331J)
PC0 -> PC7
PE0 -> PE7
PD0 -> PD7
V
V
PA0 -> PA7
PB0 -> PB7
(8 bits)
DDA
SSA
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