R8A77850AADBGV Renesas Electronics America, R8A77850AADBGV Datasheet - Page 712
R8A77850AADBGV
Manufacturer Part Number
R8A77850AADBGV
Description
IC SUPERH MCU 436-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77850AADBGV.pdf
(1694 pages)
Specifications of R8A77850AADBGV
Core Processor
SH-4A
Core Size
32-Bit
Speed
600MHz
Connectivity
Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
Peripherals
DMA, POR, WDT
Number Of I /o
108
Program Memory Type
ROMless
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
1 V ~ 1.2 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
436-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R8A77850AADBGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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14. Direct Memory Access Controller (DMAC)
14.3.6
TCRB are 32-bit readable/writable registers. The data written to TCR by the CPU is also written
to TCRB. While the half end function is being used, TCRB are used as the initial value retain
registers to detect half end. Also, TCRB specify the number of DMA transfers which are set in
TCR again in repeat mode. TCRB specify the number of DMA transfers and are used as transfer
count counters in reload mode.
In reload mode, bits 7 to 0 operate as transfer count counters. When the values are 0, values of
SAR and DAR are updated, and the value of the bits 23 to 16 in TCRB are loaded to the bits 7 to
0. Set the number of transfers until reloading starts to bits 23 to 16. In reload mode, a value from
H'FF (255 times) to H'01 (1 time) can be specified to the bits 23 to 16 and 7 to 0 in TCRB, and set
the same number to bits 23 to 16 and bits 7 to 0 and set bits 15 to 8 to H'00. Also, clear the HIE bit
in CHCR to 0 and do not use the half end function.
Bits 31 to 24 in TCRB are always read as 0. The write value should always be 0.
The initial value of TCRB is undefined.
Rev.1.00 Jan. 10, 2008 Page 680 of 1658
REJ09B0261-0100
Initial value:
Initial value:
R/W:
R/W:
BIt:
BIt:
DMA Transfer Count Registers B0 to B3, B6 to B9 (TCRB0 to TCRB3, TCRB6 to
TCRB9)
R/W
31
15
⎯
⎯
⎯
R
R/W
30
⎯
⎯
14
⎯
R
R/W
29
⎯
⎯
13
⎯
R
R/W
28
12
⎯
⎯
⎯
R
R/W
27
11
⎯
⎯
⎯
R
R/W
26
10
⎯
⎯
⎯
R
R/W
25
⎯
⎯
⎯
R
9
R/W
24
⎯
⎯
⎯
R
8
R/W
R/W
23
⎯
⎯
7
R/W
R/W
22
⎯
⎯
6
R/W
R/W
21
⎯
⎯
5
R/W
R/W
20
⎯
⎯
4
R/W
R/W
19
⎯
⎯
3
R/W
R/W
18
⎯
⎯
2
R/W
R/W
17
⎯
⎯
1
R/W
R/W
16
⎯
⎯
0
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