HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 96

• Manufacturer Part Number: HD6477021X20V
• Description: MCU 5V 32K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7020r

Specifications of HD6477021X20V

• Core Processor: SH-1
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

6.1
The user break controller (UBC) simplifies the debugging of user programs. Break conditions are
set in the UBC and a user break interrupt request is sent to the CPU in response to the contents of
a CPU or DMAC bus cycle. This function can implement an effective self-monitoring debugger,
enabling a program to be debugged by itself without using a large in-circuit emulator.
6.1.1
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6.1.2
Figure 6.1 is the block diagram of the user break controller.
The following break conditions can be set:
When break conditions are met, a user break interrupt is generated. A user-created user break
interrupt exception routine can then be executed.
When a break is set to a CPU instruction fetch, the break occurs just before the fetched
instruction.
Address
CPU cycle or DMA cycle
Instruction fetch or data access
Read or write
Operand size (long word access, word access, or byte access)
Overview
Features
Block Diagram
Section 6 User Break Controller (UBC)
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