DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 147

• Manufacturer Part Number: DF71251AD50FPV
• Description: MCU RISC FLASH 32K 8K 64LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Tinyr

Specifications of DF71251AD50FPV

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

7.2.10
BBRB is a 16-bit readable/writable register, which specifies (1) bus master for I bus cycle, (2) L
bus cycle or I bus cycle, (3) instruction fetch or data access, (4) read or write, and (5) operand size
in the break conditions of channel B.
Initial value:
Bit
15 to 11 ⎯
10 to 8
7, 6
R/W:
Bit:
Break Bus Cycle Register B (BBRB)
15
R
0
Bit Name
CPB[2:0]
CDB[1:0]
-
14
R
0
-
13
R
0
-
Initial
Value
All 0
000
00
12
R
0
-
11
R
0
-
R/W
R
R/W
R/W
R/W
10
0
CPB[2:0]
R/W
Description
Select the L bus cycle or I bus cycle as the bus cycle
of the channel B break condition.
00: Condition comparison is not performed
01: The break condition is the L bus cycle
10: The break condition is the I bus cycle
11: The break condition is the L bus cycle
Reserved
These bits are always read as 0. The write value
should always be 0.
Bus Master Select B for I Bus
Select the bus master when the I bus is selected as
the bus cycle of the channel B break condition.
However, when the L bus is selected as the bus cycle,
the setting of the CPB2 to CPB0 bits is disabled.
000: Condition comparison is not performed
xx1: The CPU cycle is included in the break condition
x1x: Setting prohibited
1xx: Setting prohibited
L Bus Cycle/I Bus Cycle Select B
9
0
R/W
8
0
R/W
7
0
CDB[1:0]
R/W
Rev. 5.00 Mar. 06, 2009 Page 127 of 770
6
0
R/W
5
0
IDB[1:0]
R/W
4
0
R/W
3
0
RWB[1:0]
REJ09B0243-0500
R/W
2
0
R/W
1
0
SZB[1:0]
R/W
0
0