MC908AZ60AVFUE Freescale Semiconductor, MC908AZ60AVFUE Datasheet - Page 304

• Manufacturer Part Number: MC908AZ60AVFUE
• Description: IC MCU 61K FLASH 8.4MHZ 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908AZ60AVFUE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8.4MHz
• Connectivity: CAN, SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 52
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 15x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 64-QFP
• Processor Series: HC08AZ
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8.4 MHz
• Number Of Programmable I/os: 52
• Number Of Timers: 8
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: FSICEBASE, M68CBL05CE, ZK-HC08AX-A, M68EM08AS/AZ60AE
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 15 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Keyboard Module (KBI)
Another way to avoid a false interrupt:
24.5 Low-Power Modes
The WAIT and STOP instructions put the MCU in low-power-consumption standby modes.
24.5.1 Wait Mode
The keyboard module remains active in wait mode. Clearing the IMASKK bit in the keyboard status and
control register enables keyboard interrupt requests to bring the MCU out of wait mode.
24.5.2 Stop Mode
The keyboard module remains active in stop mode. Clearing the IMASKK bit in the keyboard status and
control register enables keyboard interrupt requests to bring the MCU out of stop mode.
24.6 Keyboard Module During Break Interrupts
The BCFE bit in the break flag control register (BFCR) enables software to clear status bits during the
break state. See
To allow software to clear the KEYF bit during a break interrupt, write a logic 1 to the BCFE bit. If KEYF
is cleared during the break state, it remains cleared when the MCU exits the break state.
To protect the KEYF bit during the break state, write a logic 0 to the BCFE bit. With BCFE at logic 0, writing
to the keyboard acknowledge bit (ACKK) in the keyboard status and control register during the break state
has no effect. See
24.7 I/O Registers
The following registers control and monitor operation of the keyboard module:
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1. Configure the keyboard pins as outputs by setting the appropriate DDRG bits in data direction
2. Configure the keyboard pins as outputs by setting the appropriate DDRH bits in data direction
3. Write logic 1s to the appropriate port G and port H data register bits.
4. Enable the KBI pins by setting the appropriate KBIEx bits in the keyboard interrupt enable register.
•
•
register G.
register H.
Keyboard status and control register (KBSCR)
Keyboard interrupt enable register (KBIER)
Chapter 13 Break Module
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
24.7.1 Keyboard Status and Control
(BRK).
Register.
Freescale Semiconductor