XC68HC705B32CFN Freescale Semiconductor, XC68HC705B32CFN Datasheet - Page 115

• Manufacturer Part Number: XC68HC705B32CFN
• Description: IC MCU 2.1MHZ 32K OTP 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of XC68HC705B32CFN

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SCI
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Eeprom Size: 256 x 8
• Ram Size: 528 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

9.2.4
The following three functions: reset, STOP and WAIT, are not in the strictest sense interrupts. However,
they are acted upon in a similar manner. Flowcharts for STOP and WAIT are shown in
RESET: A reset condition causes the program to vector to its starting address, which is
STOP:
WAIT:
MC68HC05B6
Rev. 4.1
contained in memory locations $1FFE (MSB) and $1FFF (LSB). The I-bit in the
condition code register is also set, to disable interrupts.
The STOP instruction causes the oscillator to be turned off and the processor to ‘sleep’
until an external interrupt (IRQ) or occurs or the device is reset.
The WAIT instruction causes all processor clocks to stop, but leaves the timer clocks
running. This ‘rest’ state of the processor can be cleared by reset, an external interrupt
(IRQ), a timer interrupt or an SCI interrupt. There are no special WAIT vectors for these
individual interrupts.
Hardware controlled interrupt sequence
RESETS AND INTERRUPTS
Figure
Freescale
2.4.
9-11
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