MC908QB8CDWER Freescale Semiconductor, MC908QB8CDWER Datasheet - Page 140

• Manufacturer Part Number: MC908QB8CDWER
• Description: IC MCU 8BIT 8K FLASH 16-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908QB8CDWER

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 13
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Processor Series: HC08QB
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: ESCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 13
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: FSICEBASE, M68CBL05AE, DEMO908QB8, DEMO908QC16
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 10 Channel
• For Use With: DEMO908QB8 - BOARD DEMO FOR MC68HC908QB8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: MC908QB8CDWERTR

System Integration Module (SIM)
14.3 SIM Bus Clock Control and Generation
The bus clock generator provides system clock signals for the CPU and peripherals on the MCU. The
system clocks are generated from an incoming clock, BUSCLKX2, as shown in
140
PIN LOGIC
RESET
INTERNAL
PULL-UP
V
DD
SIM RESET STATUS REGISTER
RESET PIN CONTROL
POR CONTROL
STOP/WAIT
CONTROL
CONTROL
AND PRIORITY DECODE
INTERRUPT CONTROL
OSCILLATOR
OSCILLATOR
CLOCK
FROM
FROM
Figure 14-1. SIM Block Diagram
Figure 14-2. SIM Clock Signals
MC68HC908QB8 Data Sheet, Rev. 3
CLOCK GENERATORS
BUSCLKX4
BUSCLKX2
RESET
COUNTER
SIM
÷2
CONTROL
MASTER
RESET
÷
SIM COUNTER
2
SIM
GENERATORS
BUS CLOCK
LVI RESET (FROM LVI MODULE)
FORCED MON MODE ENTRY (FROM MENRST MODULE)
MODULE STOP
MODULE WAIT
CPU STOP (FROM CPU)
CPU WAIT (FROM CPU)
SIMOSCEN (TO OSCILLATOR)
COP CLOCK
BUSCLKX4 (FROM OSCILLATOR)
BUSCLKX2 (FROM OSCILLATOR)
INTERNAL CLOCKS
ILLEGAL OPCODE (FROM CPU)
ILLEGAL ADDRESS (FROM ADDRESS
MAP DECODERS)
COP TIMEOUT (FROM COP MODULE)
INTERRUPT SOURCES
CPU INTERFACE
Figure
Freescale Semiconductor
14-2.