XC68HC705B32CB Freescale Semiconductor, XC68HC705B32CB Datasheet - Page 171
XC68HC705B32CB
Manufacturer Part Number
XC68HC705B32CB
Description
IC MCU 2.1MHZ 32K OTP 56-DIP
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet
1.MC68HC705B16CFN.pdf
(302 pages)
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
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The bootstrap program first copies part of itself into RAM, as the program cannot be executed in
ROM during verification/programming of the EPROM. It then sets the TCMP1 output to a logic high
level.
MC68HC05B6
Rev. 4.1
Parallel EPROM bootstrap
A
Bad EPROM programming
Y
green LED flashes
Program EPROM;
Programming OK?
Figure C-3 Modes of operation flow chart (1 of 2)
Red LED on
TCAP1 set?
parallel load;
IRQ at 9V?
PD4 set?
PD3 set?
N
N
N
Reset
Y
Y
Bootstrap mode
N
N
Y
Y
MC68HC705B5
Non-user mode
PD2 set?
Y
EPROM verified
Green LED on
N
Non-user mode
Green LED on
User mode
EPROM
erased?
Y
N
EPROM not erased
Red LED on
Freescale
C-9
14
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