UPSD3234A-40U6T STMicroelectronics, UPSD3234A-40U6T Datasheet - Page 24

• Manufacturer Part Number: UPSD3234A-40U6T
• Description: IC MCU 8032 64KB FLASH 80TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3234A-40U6T

• Core Processor: 8032
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, UART/USART, USB
• Peripherals: LVR, POR, PWM, WDT
• Number Of I /o: 46
• Program Memory Size: 288KB (288K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Architecture overview
2.11
Note:
24/189
Table 4.
Logical instructions
Table 5
Boolean operations (AND, OR, Exclusive OR, NOT) on bytes perform the operation on a bit-
by-bit basis. That is, if the Accumulator contains 00110101B and byte contains 01010011B,
then:
will leave the Accumulator holding 00010001B.
The addressing modes that can be used to access the <byte> operand are listed in
The ANL A, <byte> instruction may take any of the forms:
Boolean operations can be performed on any byte in the internal Data Memory space
without going through the Accumulator. The XRL <byte>, #data instruction, for example,
offers a quick and easy way to invert port bits, as in:
If the operation is in response to an interrupt, not using the Accumulator saves the time and
effort to push it onto the stack in the service routine.
The Rotate instructions (RL A, RLC A, etc.) shift the Accumulator 1 bit to the left or right. For
a left rotation, the MSB rolls into the LSB position. For a right rotation, the LSB rolls into the
MSB position.
The SWAP A instruction interchanges the high and low nibbles within the Accumulator. This
is a useful operation in BCD manipulations. For example, if the Accumulator contains a
ANL A, <byte>
ANL A,7FH(direct addressing)
ANL A, @R1 (indirect addressing)
ANL A,R6 (register addressing)
ANL A,#53H (immediate constant)
XRL P1, #0FFH.
DEC <byte>
INC <byte>
Mnemonic
INC DPTR
MUL AB
DIV AB
lists logical instructions for UPSD323xx devices. The instructions that perform
DA A
DEC
INC
Arithmetic instructions (continued)
<byte> = <byte> + 1
<byte> = <byte> – 1
DPTR = DPTR + 1
B = Mod[ A / B ]
Decimal Adjust
A = Int[ A / B ]
B:A = B x A
Operation
A = A + 1
A = A – 1
UPSD3234A, UPSD3234BV, UPSD3233B, UPSD3233BV
Dir.
X
X
Accumulator and B only
Accumulator and B only
Addressing modes
Accumulator only
Accumulator only
Accumulator only
Data Pointer only
Ind.
X
X
Reg.
X
X
Table
Imm.
5.