MC9S12HZ128VAL Freescale Semiconductor, MC9S12HZ128VAL Datasheet - Page 79

• Manufacturer Part Number: MC9S12HZ128VAL
• Description: IC MCU 16BIT 2K FLASH 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12HZ128VAL

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: CAN, EBI/EMI, I²C, SCI, SPI
• Peripherals: LCD, Motor control PWM, POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 6K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 112-LQFP
• Processor Series: S12H
• Core: HCS12
• Data Bus Width: 16 bit
• Data Ram Size: 6 KB
• Interface Type: I2C/SCI/SPI
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 85
• Number Of Timers: 8
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Freescale Semiconductor
TRY TO DECREASE Tbus
Figure 2-22. Determination Procedure for PRDIV8 and FDIV Bits
FDIV[5:0]=PRDCLK[MHz]*(5+Tbus[ s])-1
YES
ALL COMMANDS IMPOSSIBLE
FCLK=(PRDCLK)/(1+FDIV[5:0])
PRDCLK[MHz]*(5+Tbus[ s])
1/FCLK[MHz] + Tbus[ s] > 5
PRDCLK=oscillator_clock/8
MC9S12HZ256 Data Sheet, Rev. 2.05
PRDIV8=0 (reset)
FCLK > 0.15 MHz
FDIV[5:0] > 4?
OSCILLATOR
Tbus < 1 s?
> 12.8 MHZ?
an integer?
PRDIV8=1
START
CLOCK
AND
?
YES
YES
YES
NO
NO
NO
NO
PRDCLK=oscillator_clock
YES
NO
FDIV[5:0]=INT(PRDCLK[MHz]*(5+Tbus[ s]))
ALL COMMANDS IMPOSSIBLE
Chapter 2 256 Kbyte Flash Module (FTS256K2V1)
END
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