UPD78F9234MC-5A4-A Renesas Electronics America, UPD78F9234MC-5A4-A Datasheet - Page 222

• Manufacturer Part Number: UPD78F9234MC-5A4-A
• Description: MCU 8BIT 8KB FLASH 30PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9234MC-5A4-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

12.1 Multiplier Function
12.2 Multiplier Configuration
220
The multiplier has the following function.
(1) 16-bit multiplication result storage register 0 (MUL0)
(2) Multiplication data registers A and B (MRA0 and MRB0)
Calculation of 8 bits
This register stores the 16-bit result of multiplication.
This register holds the result of multiplication after 16 CPU clocks have elapsed.
MUL0 can be read by a 16-bit memory manipulation instruction.
Reset signal generation makes MUL0 undefined.
Caution Although this register is manipulated with a 16-bit memory manipulation instruction, it can
These are 8-bit multiplication data storage registers. The multiplier multiplies the values of MRA0 and MRB0.
MRA0 and MRB0 can be written by an 8-bit memory manipulation instruction.
Reset signal generation makes these registers undefined.
Figure 12-1 shows the block diagram of the multiplier.
be also manipulated with an 8-bit memory manipulation instruction. When using an 8-bit
memory manipulation instruction, however, access the register by means of direct
addressing.
8 bits = 16 bits
CHAPTER 12 MULTIPLIER
User’s Manual U17446EJ5V0UD