MC68HC705B16CFN Freescale Semiconductor, MC68HC705B16CFN Datasheet - Page 189

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MC68HC705B16CFN

Manufacturer Part Number
MC68HC705B16CFN
Description
IC MCU 2.1MHZ 15K OTP 52-PLCC
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet

Specifications of MC68HC705B16CFN

Core Processor
HC05
Core Size
8-Bit
Speed
2.1MHz
Connectivity
SCI
Peripherals
POR, WDT
Number Of I /o
32
Program Memory Size
15KB (15K x 8)
Program Memory Type
OTP
Eeprom Size
256 x 8
Ram Size
352 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
52-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
MC68HC705B16CFN
Manufacturer:
MOT
Quantity:
5 510
Price:
The MC68HC705B16 is a device similar to the MC68HC05B6, but with increased RAM and
15 kbytes of EPROM instead of 6 kbytes of ROM. In addition, the self-check routines available in
the MC68HC05B6 are replaced by bootstrap firmware. The MC68HC705B16 is an OTPROM
(one-time programmable ROM) version of the MC68HC05B16, meaning that once the application
program has been loaded in the EPROM it can never be erased. The entire MC68HC05B6 data
sheet applies to the MC68HC705B16, with the exceptions outlined in this appendix.
MC68HC05B6
Rev. 4.1
To ensure correct operation of the MC68HC705B16 after power-on, the device must
be reset a second time after power-on. This can be done in software using the
MC68HC705B16 watchdog.
The following software sub-routine should be used:
The interrupt vector at $3FF0 and $3FF1 must be initialised with the RESET2
address value.
RESET2
BSET
MC68HC705B16
0, $0C
STOP
MC68HC705B16
E
Start watchdog
STOP causes immediate watchdog
system reset
Freescale
E-1
14

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