ST10F272M-4QR3 STMicroelectronics, ST10F272M-4QR3 Datasheet - Page 46

• Manufacturer Part Number: ST10F272M-4QR3
• Description: MCU 16BIT 256K FLASH 144-PQFP
• Manufacturer: STMicroelectronics
• Series: ST10r

Specifications of ST10F272M-4QR3

• Core Processor: ST10
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: ASC, CAN, EBI/EMI, I²C, SSC, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 111
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 20K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 24x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 144-MQFP, 144-PQFP
• Processor Series: ST10F27x
• Core: ST10
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Central processing unit (CPU)
7.1
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Multiplier-accumulator unit (MAC)
The MAC co-processor is a specialized co-processor added to the ST10 CPU core in order
to improve the performances of the ST10 family in signal processing algorithms.
The standard ST10 CPU has been modified to include new addressing capabilities which
enable the CPU to supply the new co-processor with up to 2 operands per instruction cycle.
This new co-processor (so-called MAC) contains a fast multiply-accumulate unit and a
repeat unit.
The co-processor instructions extend the ST10 CPU instruction set with multiply, multiply-
accumulate, 32-bit signed arithmetic operations.
Figure 8.
1. Shared with standard ALU
Interrupt controller
ST10 CPU
GPR pointers(1)
IDX0 pointer
IDX1 pointer
QR0 GPR offset register
QR1 GPR offset register
QX0 IDX offset register
QX1 IDX offset register
MAC unit architecture
Repeat unit
Control unit
MRW
MCW
Concatenation
MSW
Flags MAE
32
40
0h
Sign extend
Operand 1
Scaler
40
40
Mux
Mux
40-bit signed arithmetic unit
A
signed/unsigned
16
40
08000h
multiplier
16 x 16
32
MAH
8-bit left/right
40
16
40
shifter
Operand 2
40
0h
MAL
40
Mux
B
40
ST10F272M