MC68HC908JK8CP Freescale Semiconductor, MC68HC908JK8CP Datasheet - Page 83

• Manufacturer Part Number: MC68HC908JK8CP
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908JK8CP

• Cpu Family: HC08
• Device Core Size: 8b
• Frequency (max): 8MHz
• Interface Type: SCI
• Program Memory Type: Flash
• Program Memory Size: 8KB
• Total Internal Ram Size: 256Byte
• # I/os (max): 15
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 13-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Through Hole
• Pin Count: 20
• Package Type: PDIP
• Lead Free Status / Rohs Status: Not Compliant

Low Power Modes
6.4.7 Oscillator Out (OSCOUT)
The frequency of this signal is equal to half of the 2OSCOUT, this signal is driven to the SIM for generation
of the bus clocks used by the CPU and other modules on the MCU. OSCOUT will be divided again in the
SIM and results in the internal bus frequency being one fourth of the XTALCLK or RCCLK frequency.
6.4.8 Internal Oscillator Clock (ICLK)
ICLK is the internal oscillator output signal (typically 50-kHz), for the COP module and the SIM. Its
frequency depends on the V
voltage. (See
Chapter 17 Electrical Specifications
for ICLK parameters.)
DD
6.5 Low Power Modes
The WAIT and STOP instructions put the MCU in low-power consumption standby modes.
6.5.1 Wait Mode
The WAIT instruction has no effect on the oscillator logic. OSCOUT, 2OSCOUT, and ICLK continues to
drive to the SIM module.
6.5.2 Stop Mode
The STOP instruction disables the XTALCLK or the RCCLK output, hence, OSCOUT and 2OSCOUT are
disabled.
The STOP instruction also turns off the ICLK input to the COP module if the STOP_ICLKDIS bit is set in
configuration register 2 (CONFIG2). After reset, the STOP_ICLKDIS bit is clear by default and ICLK is
enabled during stop mode.
6.6 Oscillator During Break Mode
The OSCOUT, 2OSCOUT, and ICLK clocks continue to be driven out when the device enters the break
state.
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
Freescale Semiconductor
83