MC68HC908SR12CFA Freescale Semiconductor, MC68HC908SR12CFA Datasheet - Page 145

• Manufacturer Part Number: MC68HC908SR12CFA
• Description: MICROCONTROLLER 48 PIN
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908SR12CFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI
• Peripherals: LVD, POR, PWM, Temp Sensor
• Number Of I /o: 31
• Program Memory Size: 12KB (12K 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 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: Q1145673

9.3.1 Bus Timing
9.3.2 Clock Start-up from POR or LVI Reset
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
STOP MODE CLOCK
ENABLE SIGNALS
FROM CONFIG2
OSC2
OSC1
PHASE-LOCKED LOOP (PLL)
OSCILLATOR (OSC) MODULE
CGMRCLK
In user mode, the internal bus frequency is either the oscillator output
(CGMXCLK) divided by four or the divided PLL output (CGMPCLK)
divided by four.
When the power-on reset module or the low-voltage inhibit module
generates a reset, the clocks to the CPU and peripherals are inactive
and held in an inactive phase until after the 4096 ICLK cycle POR
timeout has completed. The RST pin is driven low by the SIM during this
entire period. The IBUS clocks start upon completion of the timeout.
Figure 9-3. CGM Clock Signals
System Integration Module (SIM)
CGMOUT
SIMDIV2
OSCCLK
CGMXCLK
ICLK
CGMVCLK
SYSTEM INTEGRATION MODULE
SIM COUNTER
÷ 2
TO PWM
TO TBM
TO TIM, ADC
SIM Bus Clock Control and Generation
System Integration Module (SIM)
GENERATORS
BUS CLOCK
USER MODE
MONITOR MODE
Data Sheet
SIMOSCEN
PTC1
IT12
TO REST
OF MCU
IT23
TO REST
OF MCU
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