MC9S08QG84CDNE Freescale Semiconductor, MC9S08QG84CDNE Datasheet - Page 261

• Manufacturer Part Number: MC9S08QG84CDNE
• Description: IC MCU 8BIT B54 RATING 8-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HCS08r

Specifications of MC9S08QG84CDNE

• Core Processor: HCS08
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 4
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: I2C, SCI, SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 1
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• For Use With: DEMO9S08QG8E - BOARD DEMO FOR MC9S08QG8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

1
17.4.3
The debug module includes nine bytes of register space for three 16-bit registers and three 8-bit control
and status registers. These registers are located in the high register space of the normal memory map so
they are accessible to normal application programs. These registers are rarely if ever accessed by normal
user application programs with the possible exception of a ROM patching mechanism that uses the
breakpoint logic.
17.4.3.1
This register contains compare value bits for the high-order eight bits of comparator A. This register is
forced to 0x00 at reset and can be read at any time or written at any time unless ARM = 1.
17.4.3.2
This register contains compare value bits for the low-order eight bits of comparator A. This register is
forced to 0x00 at reset and can be read at any time or written at any time unless ARM = 1.
17.4.3.3
This register contains compare value bits for the high-order eight bits of comparator B. This register is
forced to 0x00 at reset and can be read at any time or written at any time unless ARM = 1.
17.4.3.4
This register contains compare value bits for the low-order eight bits of comparator B. This register is
forced to 0x00 at reset and can be read at any time or written at any time unless ARM = 1.
Freescale Semiconductor
Reset
BDFR is writable only through serial background mode debug commands, not from user programs.
BDFR
Field
W
0
R
DBG Registers and Control Bits
Background Debug Force Reset — A serial active background mode command such as WRITE_BYTE allows
an external debug host to force a target system reset. Writing 1 to this bit forces an MCU reset. This bit cannot
be written from a user program.
0
0
7
Debug Comparator A High Register (DBGCAH)
Debug Comparator A Low Register (DBGCAL)
Debug Comparator B High Register (DBGCBH)
Debug Comparator B Low Register (DBGCBL)
Figure 17-6. System Background Debug Force Reset Register (SBDFR)
= Unimplemented or Reserved
0
0
6
Table 17-3. SBDFR Register Field Description
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 5
0
0
5
0
0
4
Description
0
0
3
2
0
0
0
0
1
Development Support
BDFR
0
0
0
1
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