UPD78F1146AGA-HAB-AX Renesas Electronics America, UPD78F1146AGA-HAB-AX Datasheet - Page 554
UPD78F1146AGA-HAB-AX
Manufacturer Part Number
UPD78F1146AGA-HAB-AX
Description
MCU 16BIT 78K0R/KX3 64-TQFP
Manufacturer
Renesas Electronics America
Series
78K0R/Kx3r
Datasheet
1.UPD78F1142AGA-HAB-AX.pdf
(880 pages)
Specifications of UPD78F1146AGA-HAB-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
-
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(3) DMA byte count register n (DBCn)
Address: FFFB6H, FFFB7H (DBC0), FFFB8H, FFFB9H (DBC1)
(n = 0, 1)
DBCn
This is a 10-bit register that is used to set the number of times DMA channel n executes transfer. Be sure to
set the number of times of transfer to this DBCn register before executing DMA transfer (up to 1024 times).
Each time DMA transfer has been executed, this register is automatically decremented. By reading this
DBCn register during DMA transfer, the remaining number of times of transfer can be learned.
DBCn 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.
Cautions 1. Be sure to clear bits 15 to 10 to “0”.
Remark
DBCn[9:0] Number of Times of Transfer
15
0
3FEH
000H
001H
002H
003H
3FFH
2. If the general-purpose register is specified or the internal RAM space is exceeded as a
n: DMA channel number (n = 0, 1)
•
•
•
result of continuous transfer, the general-purpose register or SFR space are written or
read, resulting in loss of data in these spaces. Be sure to set the number of times of
transfer that is within the internal RAM space.
14
0
Figure 14-3. Format of DMA Byte Count Register n (DBCn)
13
(When DBCn is Written)
0
DBC0H: FFFB7H
DBC1H: FFFB9H
12
0
1024
1022
1023
1
2
3
•
•
•
11
CHAPTER 14 DMA CONTROLLER
0
User’s Manual U17854EJ9V0UD
10
0
9
Completion of transfer or waiting for 1024 times of DMA transfer
8
Waiting for remaining three times of DMA transfer
Waiting for remaining 1022 times of DMA transfer
Waiting for remaining 1023 times of DMA transfer
Waiting for remaining two times of DMA transfer
Waiting for remaining one time of DMA transfer
After reset: 0000H
Remaining Number of Times of Transfer
7
6
(When DBCn is Read)
5
DBC0L: FFFB6H
DBC1L: FFFB8H
•
•
•
R/W
4
3
2
1
0
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