MC9S08GT8ACFBE Freescale Semiconductor, MC9S08GT8ACFBE Datasheet - Page 125

• Manufacturer Part Number: MC9S08GT8ACFBE
• Description: IC MCU 8K FLASH 1K RAM 44-QFP
• Manufacturer: Freescale Semiconductor
• Series: HCS08r

Specifications of MC9S08GT8ACFBE

• Core Processor: HCS08
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-QFP
• Processor Series: S08GT
• Core: HCS08
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: I2C/SCI/SPI
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 36
• Operating Supply Voltage: 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWS08
• Development Tools By Supplier: M68EVB908GB60E, M68DEMO908GB60E
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• For Use With: M68DEMO908GB60E - BOARD DEMO MC9S08GB60M68EVB908GB60E - BOARD EVAL FOR MC9S08GB60
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Chapter 9
Internal Clock Generator (S08ICGV4)
9.1
The MC9S08GT16A/GT8A microcontroller provides one internal clock generation (ICG) module to
create the system bus frequency. All functions described in this section are available on the
MC9S08GT16A/GT8A microcontroller. The EXTAL and XTAL pins share port G bits 2 and 1,
respectively. Analog supply lines V
pins. Electrical parametric data for the ICG may be found in
Freescale Semiconductor
ICG
Introduction
ICGLCLK*
ICGERCLK
FFE
Freescale Semiconductor programs a factory trim value for ICGTRM into
the FLASH location $FFBE (NVICGTRM). Leaving this address for the
ICGTRM value also allows debugger and programmer vendors to perform
a manual trim operation and store the resultant ICGTRM value into
NVICGTRM for users to access at a later time. The value in NVICGTRM
is not automatically loaded and therefore must be copied into ICGTTRM by
user code.
ICGOUT
* ICGLCLK is the alternate BDC clock source for the MC9S08GT16A/GT8A.
CPU
÷
CONTROL
2
SYSTEM
LOGIC
÷
2
FIXED FREQ CLOCK (XCLK)
Figure 9-1. System Clock Distribution Diagram
RTI
BUSCLK
MC9S08GT16A/GT8A Data Sheet, Rev. 1
DDA
and V
BDC
TPM1
SSA
NOTE
are internally derived from the MCU’s V
COP
TPM2
Appendix A, “Electrical
ATD has min and max
frequency requirements. See
Chapter 14, “Analog-to-Digital Convert-
er
“Electrical
(S08ATDV3),” and
IIC1
ATD1
Characteristics.”
SCI1
Appendix A,
RAM
SCI2
Characteristics.”
FLASH has frequency
requirements for program
and erase operation.
See
Characteristics.”
Appendix A, “Electrical
FLASH
DD
SPI1
and V
SS
125