MCHC705JJ7CPE Freescale Semiconductor, MCHC705JJ7CPE Datasheet - Page 122

• Manufacturer Part Number: MCHC705JJ7CPE
• Description: IC MCU 8BIT 224 BYTES RAM 20PDIP
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MCHC705JJ7CPE

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SIO
• Peripherals: POR, Temp Sensor, WDT
• Number Of I /o: 14
• Program Memory Size: 6KB (6K x 8)
• Program Memory Type: OTP
• Ram Size: 224 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Processor Series: HC705JJ
• Core: HC05
• Data Bus Width: 8 bit
• Data Ram Size: 224 B
• Interface Type: SIOP
• Maximum Clock Frequency: 2.1 MHz
• Number Of Programmable I/os: 14
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 4 Channel
• Package: 20PDIP
• Family Name: HC05
• Maximum Speed: 2.1 MHz
• Operating Supply Voltage: 3.3|5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

EPROM/OTPROM
13.2.3 EPROM Security Bit
An EPROM programmable bit is provided at the location of the COP watchdog register at $1FF0 as shown
in
locations will return undefined results when the EPMSEC bit is set. Refer to
Programming
EPMSEC — EPROM Security
13.3 EPROM Programming
A programming board is available from Freescale to download to the on-chip EPROM/OTPROM using
the factory-provided programming software. Factory-provided software for programming the PEPROM is
available on the World Wide Web at:
The programming software copies to the 6144-byte space located at EPROM addresses $0700–$1EFF
and to the 16-byte space at addresses $1FF0–$1FFF which includes the mask option register at address
$1FF1, and the security bit at address $1FF0.
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or copying the EPROM/OTPROM
122
difficult for unauthorized users.
Figure
This EPROM write-only bit enables the access to the EPROM array.
http://www.freescale.com
1 = Access to the EPROM array in non-user modes is denied.
0 = Access to the EPROM array in non-user modes is enabled.
13-3. This bit allows control of access to the EPROM array. Any accesses of the EPROM
Address:
Erased:
for programming instructions.
To program the EPROM/OTPROM, MOR, or EPMSEC bits properly, the
V
Reset:
Read:
Write:
Figure 13-3. EPROM Security in COP and Security Register (COPR)
DD
MC68HC705JJ7 • MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
voltage must be greater than 4.5 volts.
$1FF0
EPMSEC
Bit 7
0
(1)
= Unimplemented
OPT
—
6
—
5
NOTE
Unaffected by reset
—
4
—
3
—
2
13.3.2 EPMSEC
—
1
Freescale Semiconductor
COPC
Bit 0
—