MC68HC705X32CFU Freescale Semiconductor, MC68HC705X32CFU Datasheet - Page 54

• Manufacturer Part Number: MC68HC705X32CFU
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC705X32CFU

• Cpu Family: HC05
• Device Core Size: 8b
• Frequency (max): 4MHz
• Interface Type: SCI
• Program Memory Type: EPROM
• Program Memory Size: 32KB
• Total Internal Ram Size: 528Byte
• # I/os (max): 32
• Number Of Timers - General Purpose: 1
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• On-chip Adc: 8-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: PQFP
• Lead Free Status / Rohs Status: Supplier Unconfirmed

3
SFB — Slow or fast mode selection for PLMB (see
Note:
Warning: Because the SFA bit and SFB bit are not double buffered, it is mandatory to set the SFA
SM — Slow mode (see
The SM bit is cleared by external or power-on reset. The SM bit is automatically cleared when
entering STOP mode.
WDOG — Watchdog enable/disable (see
The WDOG bit can be used to enable the watchdog timer previously disabled by a mask option.
Following a watchdog reset the state of the WDOG bit is as defined by the mask option specified.
1 (set)
0 (clear) –
1 (set)
0 (clear) –
1 (set)
0 (clear) –
The highest speed of the PLM system corresponds to the frequency of the TOF bit
being set, multiplied by 256. The lowest speed of the PLM system corresponds to the
frequency of the TOF bit being set, multiplied by 16.
bit and the SFB bit to the desired values before writing to the PLM registers; not doing
so could temporarily give incorrect values at the PLM outputs.
–
–
–
Freescale Semiconductor, Inc.
(f
SCI, A/D and timer.
bit has no effect.
Slow mode PLMB (4096 x timer clock period).
Fast mode PLMB (256 x timer clock period).
The system runs at a bus speed 16 times lower than normal
The system runs at normal bus speed (f
Watchdog counter cleared and enabled.
The watchdog cannot be disabled by software; writing a zero to this
OSC
Section
For More Information On This Product,
/32). SLOW mode affects all sections of the device, including
2.2.3)
MEMORY AND REGISTERS
Go to: www.freescale.com
Section
10.1.4)
Section
OSC
8.1)
/2).
MC68HC05X16
Rev. 1