MC908GP32CBE Freescale Semiconductor, MC908GP32CBE Datasheet - Page 47

• Manufacturer Part Number: MC908GP32CBE
• Description: IC MCU 32K FLASH 8MHZ 42-SDIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908GP32CBE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 31
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 42-DIP (0.600", 15.24mm)
• Controller Family/series: HC08
• No. Of I/o's: 31
• Ram Memory Size: 512Byte
• Cpu Speed: 8MHz
• No. Of Timers: 1
• Embedded Interface Type: I2C, SCI, SPI
• Rohs Compliant: Yes
• Processor Series: HC08GP
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Development Tools By Supplier: FSICEBASE, DEMO908GZ60E, M68CBL05CE, M68EML08GPGTE
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Chapter 3
Low-Power Modes
3.1 Introduction
The MCU may enter two low-power modes: wait mode and stop mode. They are common to all HC08
MCUs and are entered through instruction execution. This section describes how each module acts in the
low-power modes.
3.1.1 Wait Mode
The WAIT instruction puts the MCU in a low-power standby mode in which the CPU clock is disabled but
the bus clock continues to run. Power consumption can be further reduced by disabling the LVI module
and/or the timebase module through bits in the CONFIG register. (See
Chapter 6 Configuration Register
(CONFIG).)
3.1.2 Stop Mode
Stop mode is entered when a STOP instruction is executed. The CPU clock is disabled and the bus clock
is disabled if the OSCSTOPENB bit in the CONFIG register is at a logic 0. (See
Chapter 6 Configuration
Register
(CONFIG).)
3.2 Analog-to-Digital Converter (ADC)
3.2.1 Wait Mode
The ADC continues normal operation during wait mode. Any enabled CPU interrupt request from the ADC
can bring the MCU out of wait mode. If the ADC is not required to bring the MCU out of wait mode, power
down the ADC by setting ADCH4–ADCH0 bits in the ADC status and control register before executing
the WAIT instruction.
3.2.2 Stop Mode
The ADC module is inactive after the execution of a STOP instruction. Any pending conversion is aborted.
ADC conversions resume when the MCU exits stop mode after an external interrupt. Allow one
conversion cycle to stabilize the analog circuitry.
3.3 Break Module (BRK)
3.3.1 Wait Mode
If enabled, the break module is active in wait mode. In the break routine, the user can subtract one from
the return address on the stack if the SBSW bit in the break status register is set.
MC68HC908GP32 Data Sheet, Rev. 10
Freescale Semiconductor
47