UPD78F1211GB-GAF-AX Renesas Electronics America, UPD78F1211GB-GAF-AX Datasheet - Page 845

• Manufacturer Part Number: UPD78F1211GB-GAF-AX
• Description: MCU 16BIT 78K0R/LX3 44-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Ix3r

Specifications of UPD78F1211GB-GAF-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

15.4 Operations of Multiplier/Divider
15.4.1 Multiplication operation
• Initial setting
• During operation processing
• Operation end
• Next operation
Operation clock
<1> Set bit 7 (DIVMODE) of the multiplication/division control register (MDUC) to 0.
<2> Set the multiplicand to the multiplication/division data register A (L) (MDAL).
<3> Set the multiplier to the multiplication/division data register A (H) (MDAH).
<4> Wait for at least one clock. The operation will end when one clock has been issued.
<5> Read the product (lower 16 bits) from the multiplication/division data register B (L) (MDBL).
<6> Read the product (higher 16 bits) from the multiplication/division data register B (H) (MDBH).
<7> To execute multiplication operation next, start from the “Initial setting” for multiplication operation.
<8> To execute division operation next, start from the “Initial setting” in 15.4.2 Division operation.
Remark
DIVMODE
MDAH
MDBH
MDAL
(There is no preference in the order of executing steps <2> and <3>.
automatically started when the multiplier and multiplicand are set to MDAH and MDAL, respectively.)
(There is no preference in the order of executing steps <5> and <6>.)
Steps <1> to <7> correspond to <1> to <7> in Figure 15-6.
"0"
Figure 15-6. Timing Diagram of Multiplication Operation (0003H × 0002H)
<1>
Initial value
Initial value
Initial value
= 0
= 0
= 0
CHAPTER 15 MULTIPLIER/DIVIDER
User’s Manual U19678EJ1V1UD
<2>
<3>
<4>
0003H
0002H
0006H
<5>, <6>
<7>
Multiplication operation is
1FFFEH
FFFFH
FFFFH
FFFE000H
843