MC68HC705B16CFN Freescale Semiconductor, MC68HC705B16CFN Datasheet - Page 196

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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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14
(1) This register is implemented in EPROM; therefore reset has no effect on the individual bits.
E.3.4
RTIM — Reset time
This bit can modify the time t
RWAT — Watchdog after reset
This bit can modify the status of the watchdog counter after reset. Usually, the watchdog system
is disabled after power-on or external reset but when this bit is set, it will be active immediately
after the following resets (except in bootstrap mode).
WWAT — Watchdog during WAIT mode
This bit can modify the status of the watchdog counter in WAIT mode. Normally, the watchdog
system is disabled in WAIT mode but when this bit is set, the watchdog will be active in WAIT
mode.
PBPD — Port B pull-down
This bit, when programmed, connects a resistive pull-down on each pin of port B. This pull-down,
R
PCPD — Port C pull-down
This bit, when programmed, connects a resistive pull-down on each pin of port C. This pull-down,
R
Freescale
E-8
PD
PD
Mask option register (MOR)
, is active on a given pin only while it is an input.
, is active on a given pin only while it is an input.
1 (set)
0 (clear) –
Mask option register
t
t
PORL
PORL
(1)
= 16 cycles.
= 4064 cycles.
PORL
Address
$3DFE
, where the RESET pin is kept low after a power-on reset.
bit 7
MC68HC705B16
bit 6
bit 5
RTIM RWAT WWAT PBPD PCPD Not affected
bit 4
bit 3
bit 2
bit 1
MC68HC05B6
bit 0
Rev. 4.1
on reset
State

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