UPD78F1203MC-CAB-AX Renesas Electronics America, UPD78F1203MC-CAB-AX Datasheet - Page 844

• Manufacturer Part Number: UPD78F1203MC-CAB-AX
• Description: MCU 16BIT 78K0R/LX3 30-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Ix3r

Specifications of UPD78F1203MC-CAB-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: 21
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

15.3 Register Controlling Multiplier/Divider
842
The multiplier/divider is controlled by using the multiplication/division control register (MDUC).
(1) Multiplication/division control register (MDUC)
Address: F00E8H
Symbol
MDUC
MDUC is an 8-bit register that controls the operation of the multiplier/divider.
MDUC can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Note DIVST can only be set (1) in the division mode. In the division mode, division operation is started by
Cautions 1. Do not rewrite DIVMODE during operation processing (while DIVST is 1). If it is rewritten,
setting (1) DIVST. DIVST is automatically cleared (0) when the operation ends. In the multiplication
mode, operation is automatically started by setting the multiplier and multiplicand to MDAH and MDAL,
respectively.
DIVMODE
DIVMODE
DIVST
2. DIVST cannot be cleared (0) by using software during division operation processing
<7>
Figure 15-5. Format of Multiplication/Division Control Register (MDUC)
0
1
0
1
the operation result will be an undefined value.
(while DIVST is 1).
Note
After reset: 00H
Multiplication mode
Division mode
Division operation processing complete
Starts division operation/division operation processing in progress
6
0
CHAPTER 15 MULTIPLIER/DIVIDER
R/W
5
0
User’s Manual U19678EJ1V1UD
Operation mode (multiplication/division) selection
4
0
Division operation start/stop
3
0
2
0
1
0
DIVST
<0>