MC908JB8ADWE Freescale Semiconductor, MC908JB8ADWE Datasheet - Page 54

• Manufacturer Part Number: MC908JB8ADWE
• Description: IC MCU 3MHZ 8K FLASH 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908JB8ADWE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 3MHz
• Connectivity: USB
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SOIC (7.5mm Width)
• Processor Series: HC08JB
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: USB
• Maximum Clock Frequency: 3 MHz
• Number Of Programmable I/os: 37
• Number Of Timers: 2
• Operating Supply Voltage: 5.25 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: FSICEBASE, DEMO908GZ60E, M68EML08GZE, KITUSBSPIDGLEVME, KITUSBSPIEVME, KIT33810EKEVME
• Minimum Operating Temperature: 0 C
• Controller Family/series: HC08
• No. Of I/o's: 21
• Ram Memory Size: 256Byte
• Cpu Speed: 8MHz
• No. Of Timers: 1
• Embedded Interface Type: SCI, SPI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FLASH Memory
4.3 Functional Description
Technical Data
54
Addr.
$FE08
$FE09
FLASH Control Register
Register Name
FLASH Block Protect
NOTE:
(FLBPR)
Register
(FLCR)
Figure 4-1. FLASH Memory Register Summary
The FLASH memory consists of an array of 8,192 bytes for user memory
plus a small block of 16 bytes for user interrupt vectors.
reads as logic 1 and a programmed bit reads as a logic 0.
memory is block erasable. The minimum erase block size is 512 bytes.
Program and erase operation operations are facilitated through control
bits in FLASH control register (FLCR).The address ranges for the
FLASH memory are shown as follows:
Programming tools are available from Freescale. Contact your local
Freescale representative for more information.
A security feature prevents viewing of the FLASH contents.
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or
copying the FLASH difficult for unauthorized users.
Reset:
Reset:
Read:
Read:
Write:
Write:
•
•
$DC00–$FBFF (user memory; 8,192 bytes)
$FFF0–$FFFF (user interrupt vectors; 16 bytes)
Bit 7
BPR7
0
0
0
BPR6
FLASH Memory
6
0
0
0
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
BPR5
5
0
0
0
BPR4
4
0
0
0
HVEN
BPR3
3
0
0
MASS
BPR2
Freescale Semiconductor
2
0
0
An erased bit
ERASE
BPR1
The FLASH
1
0
0
1
Bit 0
BPR0
PGM
0
0