MCHC908GR8AVFAE Freescale Semiconductor, MCHC908GR8AVFAE Datasheet - Page 220

• Manufacturer Part Number: MCHC908GR8AVFAE
• Description: IC MCU 8K FLASH 8MHZ 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCHC908GR8AVFAE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• Program Memory Size: 7.5KB (7.5K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Development Support
18.2.2.3 SIM Break Status Register
The SIM break status register (SBSR) contains a flag to indicate that a break caused an exit from wait
mode. This register is only used in emulation mode.
SBSW — SIM Break Stop/Wait
18.2.2.4 SIM Break Flag Control Register
The SIM break control register (SBFCR) contains a bit that enables software to clear status bits while the
MCU is in a break state.
BCFE — Break Clear Flag Enable Bit
18.2.3 Low-Power Modes
The WAIT and STOP instructions put the MCU in low power- consumption standby modes. If enabled,
the break module will remain enabled in wait and stop modes. However, since the internal address bus
does not increment in these modes, a break interrupt will never be triggered.
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SBSW can be read within the break state SWI routine. The user can modify the return address on the
stack by subtracting one from it.
This read/write bit enables software to clear status bits by accessing status registers while the MCU is
in a break state. To clear status bits during the break state, the BCFE bit must be set.
1 = Wait mode was exited by break interrupt
0 = Wait mode was not exited by break interrupt
1 = Status bits clearable during break
0 = Status bits not clearable during break
Address: $FE00
Address: $FE03
Reset:
Read:
Reset:
Write:
Read:
Write:
Figure 18-8. SIM Break Flag Control Register (SBFCR)
BCFE
Bit 7
Bit 7
R
R
R
0
Figure 18-7. SIM Break Status Register (SBSR)
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
= Reserved
= Reserved
R
6
R
6
R
5
R
5
R
4
R
4
1. Writing a 0 clears SBSW.
R
3
R
3
R
2
R
2
Note
SBSW
1
0
R
1
(1)
Freescale Semiconductor
Bit 0
Bit 0
R
R