R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 335
R5S77631Y266BGV
Manufacturer Part Number
R5S77631Y266BGV
Description
IC SUPERH MPU ROMLESS 499BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R5S77631Y266BGV.pdf
(2056 pages)
Specifications of R5S77631Y266BGV
Core Processor
SH-4A
Core Size
32-Bit
Speed
266MHz
Connectivity
Audio Codec, I²C, MMC, SCI, SIM, SIO, SSI, USB
Peripherals
DMA, LCD, POR, WDT
Number Of I /o
107
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.15 V ~ 1.35 V
Data Converters
A/D 4x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
499-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5S77631Y266BGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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To prevent incorrect writing, this register can only be written to with bits 31 to 24 set to H'A5.
Initial value:
Initial value:
Procedure for Using User Interrupt Mask Level Register
This function is used to save time by disabling interrupts whose priorities are low when a high
priority interrupt is processed in the device driver.
Setting the interrupt mask level in USERIMASK disables interrupts having an equal or lower
priority level than the specified mask level. This function can disable less-urgent interrupts in a
task (such as device driver) operating in user mode to accelerate urgent processing.
USERIMASK is allocated to a different 64-Kbyte page than where the other INTC registers are
allocated. When accessing this register in user mode, translate the address through the MMU. In
the system that uses a multitasking OS, processes that can access USERIMASK must be
controlled by using memory protection functions of the MMU. When terminating the task or
switching to another task, be sure to clear USERIMASK to 0 before quitting the task. If the
UIMASK bits are left set to a non-zero value, interrupts which are not higher in priority than the
Bit
31 to 24 —
23 to 8
7 to 4
3 to 0
R/W:
R/W:
Bit:
Bit:
Bit Name
—
—
UIMASK
R/W
31
−
15
−
R
0
0
R/W
30
14
−
−
R
0
0
R/W
Initial
Value
H'00
All 0
H'0
All 0
29
13
−
−
R
0
0
R/W
28
12
−
−
R
0
0
R/W
R/W
R
R/W
R
R/W
27
11
−
−
R
0
0
R/W
26
10
−
−
R
0
0
Description
To write a value to bits 7 to 4, write H'A5 to them.
These bits are always read as 0.
Reserved
These bits are always read as 0. The write value
should always be 0.
Interrupt Mask Level
Masks interrupts whose priority levels are lower than
the level set in the UIMASK bit.
Reserved
These bits are always read as 0. The write value
should always be 0.
R/W
25
−
−
R
0
9
0
R/W
24
−
−
R
0
8
0
R/W
23
−
R
0
7
0
Rev. 2.00 May 22, 2009 Page 265 of 1982
R/W
22
R
UIMASK
−
0
6
0
Section 9 Interrupt Controller (INTC)
R/W
21
−
R
0
5
0
R/W
20
−
R
0
4
0
19
−
−
R
R
0
3
0
REJ09B0256-0200
18
−
−
R
R
0
2
0
17
−
−
R
R
0
1
0
16
−
−
R
R
0
0
0
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