MCHC705JJ7CPE Freescale Semiconductor, MCHC705JJ7CPE Datasheet - Page 119

• 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

Chapter 13
EPROM/OTPROM
13.1 Introduction
This section describes how to program the 6160-byte erasable programmable read-only
memory/one-time programmable read-only memory (EPROM/OTPROM), the mask option register
(MOR), and the EPROM security bit (EPMSEC).
13.2 EPROM Registers
The EPROM programming register (EPROG) controls the actual programming of the EPROM bytes and
the mask option register (MOR). The MOR controls eight mask options found on the read-only memory
(ROM) version of this microcontroller unit (MCU). There is an additional EPROM bit (EPMSEC) located
at the computer operating properly (COP) address to provide EPROM array security.
13.2.1 EPROM Programming Register
The EPROM programming register (EPROG) shown in
programming the EPROM. In normal operation, the EPROM programming register contains all logic 0s.
EPGM — EPROM Programming Bit
MPGM — Mask Option Register (MOR) Programming Bit
Freescale Semiconductor
This read/write bit applies the voltage from the IRQ/V
ELAT bit must already be set. Clearing the ELAT bit also clears the EPGM bit. Reset clears EPGM.
This read/write bit applies programming power from the IRQ/V
1 = EPROM programming power switched on
0 = EPROM programming power switched off
1 = MOR programming power switched on
0 = MOR programming power switched off
Address:
In packages with no quartz window, the EPROM functions as one-time
programmable ROM (OTPROM).
Reset:
Read:
Write:
MC68HC705JJ7 • MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
$001C
Figure 13-1. EPROM Programming Register (EPROG)
Bit 7
0
0
= Unimplemented
R
6
0
0
R
5
0
0
NOTE
R
4
0
0
PP
Figure 13-1
pin to the EPROM. To write the EPGM bit, the
R
R
3
0
0
PP
= Reserved for test
pin to the MOR. Reset clears MPGM.
contains the control bits for
ELAT
2
0
MPGM
1
0
EPGM
Bit 0
0
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