MC68HC705B16CFN Freescale Semiconductor, MC68HC705B16CFN Datasheet - Page 29

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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

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2.1
The MC68HC05B6 MCU has two modes of operation, namely single chip and self check modes.
Table 2-1
2.1.1
This is the normal operating mode of the MC68HC05B6. In this mode the device functions as a
self-contained microcomputer (MCU) with all on-board peripherals, including the three 8-bit I/O
ports and the 8-bit input-only port, available to the user. All address and data activity occurs within
the MCU.
MC68HC05B6
Rev. 4.1
shows the conditions required to enter each mode on the rising edge of RESET.
MODES OF OPERATION AND PIN
Modes of operation
Single chip mode
V
IRQ pin
SS
2V
2V
MODES OF OPERATION AND PIN DESCRIPTIONS
to V
DD
DD
DD
Table 2-1 Mode of operation selection
TCAP1 pin
V
SS
DESCRIPTIONS
V
V
to V
DD
DD
DD
PD3
X
1
1
2
PD4
X
0
1
Single chip
Serial RAM loader
Jump to any address
Mode
Freescale
2-1
2

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