UPD78F1146AGB-GAH-AX Renesas Electronics America, UPD78F1146AGB-GAH-AX Datasheet - Page 553

• Manufacturer Part Number: UPD78F1146AGB-GAH-AX
• Description: MCU 16BIT 78K0R/KX3 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1146AGB-GAH-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(2) DMA RAM address register n (DRAn)
Address: FFFB2H, FFFB3H (DRA0), FFFB4H, FFFB5H (DRA1)
(n = 0, 1)
DRAn
This is a 16-bit register that is used to set a RAM address that is the transfer source or destination of DMA
channel n.
Addresses of the internal RAM area other than the general-purpose registers (FEF00H to FFEDFH in the
case of the
Set the lower 16 bits of the RAM address.
This register is automatically incremented when DMA transfer has been started. It is incremented by +1 in
the 8-bit transfer mode and by +2 in the 16-bit transfer mode. DMA transfer is started from the address set to
this DRAn register. When the data of the last address has been transferred, DRAn stops with the value of the
last address +1 in the 8-bit transfer mode, and the last address +2 in the 16-bit transfer mode.
In the 16-bit transfer mode, the least significant bit is ignored and is treated as an even address.
DRAn can be read or written in 8-bit or 16-bit units. However, it cannot be written during DMA transfer.
Reset signal generation clears this register to 0000H.
Remark
15
n: DMA channel number (n = 0, 1)
μ
PD78F1142 and 78F1142A) can be set to this register.
14
Figure 14-2. Format of DMA RAM Address Register n (DRAn)
13
DRA0H: FFFB3H
DRA1H: FFFB5H
12
11
CHAPTER 14 DMA CONTROLLER
User’s Manual U17854EJ9V0UD
10
9
8
After reset: 0000H
7
6
5
DRA0L: FFFB2H
DRA1L: FFFB4H
R/W
4
3
2
1
0
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