XC68HC705B32CB Freescale Semiconductor, XC68HC705B32CB Datasheet - Page 163

• Manufacturer Part Number: XC68HC705B32CB
• Description: IC MCU 2.1MHZ 32K OTP 56-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of XC68HC705B32CB

• 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: 56-SDIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

The MC68HC705B5 is a device similar to the MC68HC05B6, but with the 6 kbytes ROM and 256
bytes EEPROM replaced by a single EPROM array. In addition, the self-check routines available
on the MC68HC05B6 are replaced by bootstrap firmware. The MC68HC705B5 is intended to
operate as a one time programmable (OTP) version of the MC68HC05B6 without EEPROM or the
MC68HC05B4, meaning that the application program can never be erased once it has been
loaded into the EPROM. The entire MC68HC05B6 data sheet applies to the MC68HC705B5, with
the exceptions outlined in this appendix.
C.1
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MC68HC05B6
Rev. 4.1
6206 bytes EPROM (including 14 bytes User vectors)
No EEPROM
Bootstrap firmware
Simultaneous programming of up to 4 bytes
Data protection for program code
Optional pull-down resistors on port B and port C
MC68HC05B6 mask options are programmable using control bits held in the options register
52-pin PLCC and 56-pin SDIP packages
High speed version not available
Features
MC68HC705B5
MC68HC705B5
C
Freescale
C-1
14