ST62T32BQ6 STMicroelectronics, ST62T32BQ6 Datasheet - Page 62

• Manufacturer Part Number: ST62T32BQ6
• Description: 8-bit Microcontrollers - MCU OTP EPROM 8K SPI/UAR
• Manufacturer: STMicroelectronics

Specifications of ST62T32BQ6

• Core: ST6
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 7948 B
• Data Ram Size: 192 B
• On-chip Adc: Yes
• Package / Case: PQFP-52
• Mounting Style: SMD/SMT
• A/d Bit Size: 8 bit
• A/d Channels Available: 21
• Interface Type: SPI, UART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 30
• Number Of Timers: 2
• Program Memory Type: EPROM
• Factory Pack Quantity: 84
• Supply Voltage - Max: 5 V
• Supply Voltage - Min: 4.5 V

ST62T32B ST62E32B
REGISTERS (Cont’d)
UART Control Register (UARTCR)
Address: D7h, Read/Write
Bit 7 = RXRDY. Receiver Ready . This flag be-
comes active as soon as a complete byte has
been received and copied into the receive buffer. It
may be cleared by writing a zero to it. Writing a
one is possible. If the interrupt enable bit RXIEN is
set to one, a software interrupt will be generated.
Bit 6 = TXMT. Transmitter Empty . This flag be-
comes active as soon as a complete byte has
been sent. It may be cleared by writing a zero to it.
It is automatically cleared by the action of writing a
data value into the UART data register.
Bit 5 = RXIEN. Receive Interrupt Enable . When
this bit is set to 1, the receive interrupt is enabled.
62/83
RXRDY TXMT RXIEN TXIEN
7
BR2
BR1
BR0
DAT9
0
Writing to RXIEN does not affect the status of the
interrupt flag RXRDY.
Bit 4 = TXIEN. Transmit Interrupt Enable . When
this bit is set to 1, the transmit interrupt is enabled.
Writing to TXIEN does not affect the status of the
interrupt flag TXRDY.
Bit 3-1= BR2..BR0. Baudrate select . These bits
select the operating baud rate of the UART, de-
pending on the frequency of fOSC. Care should be
taken not to change these bits during communica-
tion as writing to these bits has an immediate ef-
fect.
Bit 0 = DAT9. Parity/Data Bit 9 . This bit represents
the 9th bit of the data character that is received or
transmitted. A write to this bit sets the level for the
bit 9 to be transmitted, so it must always be set to
the correct level before transmission. If used as
parity, the value has first to be calculated by soft-
ware. Reading this bit will return the 9th bit of the
received character.