ST72F32AK2T6 STMicroelectronics, ST72F32AK2T6 Datasheet - Page 89

• Manufacturer Part Number: ST72F32AK2T6
• Description: MCU 8BIT 8KB FLASH/ROM 32-TQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F32AK2T6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 3.8 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFP, 32-VQFP
• Processor Series: ST72F3x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 384 B
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST7232X-EVAL, ST7MDT20-DVP3, ST7MDT20J-EMU3, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 12 Channel
• A/d Bit Size: 10 bit
• A/d Channels Available: 12
• Height: 1.4 mm
• Length: 7 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 3.8 V
• Width: 7 mm
• For Use With: 497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 497-5610

SERIAL COMMUNICATIONS INTERFACE (Cont’d)
10.5.4 Functional Description
The block diagram of the Serial Control Interface,
is shown in
isters:
– Two control registers (SCICR1 & SCICR2)
– A status register (SCISR)
– A baud rate register (SCIBRR)
– An extended prescaler receiver register (SCIER-
– An extended prescaler transmitter register (SCI-
Refer to the register descriptions in
10.5.7for the definitions of each bit.
Figure 52. Word Length Programming
PR)
ETPR)
Figure
9-bit Word length (M bit is set)
Start
Bit
8-bit Word length (M bit is reset)
Start
Bit
51. It contains 6 dedicated reg-
Bit0
Bit0
Bit1
Bit1
Break Frame
Data Frame
Idle Frame
Break Frame
Data Frame
Idle Frame
Bit2
Bit2
Bit3
Bit3
Section
Bit4
Bit4
Bit5
Bit5
10.5.4.1 Serial Data Format
Word length may be selected as being either 8 or 9
bits by programming the M bit in the SCICR1 reg-
ister (see
The TDO pin is in low state during the start bit.
The TDO pin is in high state during the stop bit.
An Idle character is interpreted as an entire frame
of “1”s followed by the start bit of the next frame
which contains data.
A Break character is interpreted on receiving “0”s
for some multiple of the frame period. At the end of
the last break frame the transmitter inserts an ex-
tra “1” bit to acknowledge the start bit.
Transmission and reception are driven by their
own baud rate generator.
Bit6
Bit6
Possible
Figure
Bit7
Parity
Bit7
Bit
Possible
Parity
Bit8
Bit
51).
Stop
Bit
Stop
Bit
Extra
Start
Next
Start
Bit
Bit
’1’
Extra
Next Data Frame
Next
Start
Start
Bit
Bit
’1’
Start
Bit
Next Data Frame
Start
Bit
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