MC9S12NE64VTU Freescale Semiconductor, MC9S12NE64VTU Datasheet - Page 167

• Manufacturer Part Number: MC9S12NE64VTU
• Description: IC MCU 25MHZ ETHERNET/PHY 80TQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12NE64VTU

• Mfg Application Notes: MC9S12NE64 Integrated Ethernet Controller Implementing an Ethernet Interface with the MC9S12NE64 Web Server Development with MC9S12NE64 and Open TCP
• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, Ethernet, I²C, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 38
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.375 V ~ 3.465 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 80-TQFP Exposed Pad, 80-eTQFP, 80-HTQFP, 80-VQFP
• Data Bus Width: 16 bit
• Data Ram Size: 8 KB
• Interface Type: I2C, SCI, SPI
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 70
• Number Of Timers: 16 bit
• Operating Supply Voltage: - 0.3 V to + 3 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 65 C
• On-chip Adc: 10 bit
• For Use With: EVB9S12NE64E - BOARD EVAL FOR 9S12NE64DEMO9S12NE64E - DEMO BOARD FOR 9S12NE64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Freescale Semiconductor
CME
0
1
1
SCME
X
0
1
SCMIE
X
X
0
Clock failure -->
Clock failure -->
Clock failure -->
Scenario 1: OSCCLK recovers prior to exiting Wait Mode.
– CM no longer indicates a failure,
Some time later either a wakeup interrupt occurs (no SCM interrupt)
or an External Reset is applied.
Scenario 2: OSCCLK does not recover prior to exiting Wait Mode.
Some time later either a wakeup interrupt occurs (no SCM interrupt)
No action, clock loss not detected.
CRG performs Clock Monitor Reset immediately
– MCU remains in Wait Mode,
– VREG enabled,
– PLL enabled,
– SCM activated,
– Start Clock Quality Check,
– Set SCMIF interrupt flag.
Some time later OSCCLK recovers.
– 4096 OSCCLK cycles later Clock Quality Check indicates clock o.k.,
– SCM deactivated,
– PLL disabled depending on PLLWAI,
– VREG remains enabled (never gets disabled in Wait Mode).
– MCU remains in Wait Mode.
– Exit Wait Mode using OSCCLK as system clock (SYSCLK),
– Continue normal operation.
– Exit Wait Mode using OSCCLK as system clock,
– Start reset sequence.
– MCU remains in Wait Mode,
– VREG enabled,
– PLL enabled,
– SCM activated,
– Start Clock Quality Check,
– Set SCMIF interrupt flag,
– Keep performing Clock Quality Checks (could continue infinitely)
– Exit Wait Mode in SCM using PLL clock (f
– Continue to perform additional Clock Quality Checks until OSCCLK
or an External RESET is applied.
– Exit Wait Mode in SCM using PLL clock (f
– Start reset sequence,
– Continue to perform additional Clock Quality Checks until OSCCLK
Table 4-11. Outcome of Clock Loss in Wait Mode
is o.k. again.
is o.k.again.
while in Wait Mode.
MC9S12NE64 Data Sheet, Rev. 1.1
CRG Actions
SCM
SCM
) as system clock,
) as system clock,
Functional Description
167