MC68HC908BD48IFB Freescale Semiconductor, MC68HC908BD48IFB Datasheet - Page 88

• Manufacturer Part Number: MC68HC908BD48IFB
• Description: IC MCU 48K FLASH 6MHZ USB 44PQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908BD48IFB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 6MHz
• Connectivity: I²C, USB
• Peripherals: POR, PWM
• Number Of I /o: 32
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 44-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

System Integration Module (SIM)
7.2 Introduction
Data Sheet
88
7.7.1
7.7.2
7.8
7.8.1
7.8.2
7.8.3
This section describes the system integration module, which supports up
to 16 external and/or internal interrupts. Together with the CPU, the SIM
controls all MCU activities. A block diagram of the SIM is shown in
Figure
SIM is a system state controller that coordinates CPU and exception
timing. The SIM is responsible for:
•
•
•
•
•
Bus clock generation and control for CPU and peripherals:
– Stop/wait/reset/break entry and recovery
– Internal clock control
Master reset control, including power-on reset (POR) and COP
timeout
Interrupt control:
– Acknowledge timing
– Arbitration control timing
– Vector address generation
CPU enable/disable timing
Modular architecture expandable to 128 interrupt sources
SIM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
7-1.
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
SIM Break Status Register (SBSR) . . . . . . . . . . . . . . . . . . 108
SIM Reset Status Register (SRSR) . . . . . . . . . . . . . . . . . . 109
SIM Break Flag Control Register (SBFCR) . . . . . . . . . . . . 110
System Integration Module (SIM)
Table 7-1
shows a summary of the SIM I/O registers. The
MC68HC908BD48
Freescale Semiconductor
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Rev. 2.1