MC68HC908GR8CD Freescale Semiconductor, MC68HC908GR8CD Datasheet - Page 197

• Manufacturer Part Number: MC68HC908GR8CD
• Description: 8-bit Microcontrollers - MCU 8 Bit 8MHz
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908GR8CD

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: HC08
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 384 B
• Operating Supply Voltage: 3 V to 5 V
• Package / Case: SOIC-28
• Mounting Style: SMD/SMT
• Data Rom Size: 64 KB
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 21
• Program Memory Type: Flash

19.5.1.3 Interrupt Status Registers
The flags in the interrupt status registers identify maskable interrupt sources.
interrupt sources and the interrupt status register flags that they set. The interrupt status registers can be
useful for debugging.
19.5.1.4 Interrupt Status Register 1
I6–I1 — Interrupt Flags 1–6
Bit 0 and Bit 1 — Always read 0
Freescale Semiconductor
These flags indicate the presence of interrupt requests from the sources shown in
1 = Interrupt request present
0 = No interrupt request present
Address:
Highest
Priority
Lowest
Reset:
Read:
Write:
$FE04
Bit 7
I6
R
R
0
Figure 19-12. Interrupt Status Register 1 (INT1)
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
= Reserved
ADC conversion complete
SPI transmitter empty
I5
R
6
0
Timebase module
Interrupt Source
SCI receive error
SPI receiver full
TIM1 channel 0
TIM1 channel 1
TIM2 channel 0
SWI instruction
TIM1 overflow
TIM2 overflow
Table 19-3. Interrupt Sources
SCI transmit
SCI receive
Reserved
Keyboard
IRQ pin
Reset
PLL
I4
R
5
0
I3
R
4
0
I2
R
3
0
Interrupt Status
I1
R
Register Flag
2
0
I10
I11
I12
I13
I14
I15
I16
—
—
I1
I2
I3
I4
I5
I6
I7
I8
I9
Table 19-3
R
1
0
0
Table
Bit 0
R
0
0
Exception Control
summarizes the
19-3.
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