MC68HC908JB8JDW Freescale Semiconductor, MC68HC908JB8JDW Datasheet - Page 281

• Manufacturer Part Number: MC68HC908JB8JDW
• Description: IC MCU 8K FLASH 3MHZ 20-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908JB8JDW

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 3MHz
• Connectivity: USB
• Peripherals: LVD, POR, PWM
• Number Of I /o: 13
• 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: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

B.5 Power Supply Pins
B.6 Reserved Register Bit
B.7 Reserved Registers
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
Freescale Semiconductor
The MC68HC08JT8 is design for low voltage operation. Connect V
and V
The V
Bit 4 of the configuration register ($001F) is a reserved bit on the
MC68HC08JT8. The bit will always read as zero.
On the MC68HC908JB8, bit 4 of the configuration register is the low-
voltage inhibit disable bit, LVID.
The two registers at $FE08 and $FE09 are reserved locations on the
MC68HC08JT8.
On the MC68HC908JB8, these two locations are the FLASH control
register and the FLASH block protect register respectively.
REG
REG
for normal operation.
voltage regulator is disabled on the MC68HC08JT8.
Figure B-3. Power Supply Bypassing
MC68HC08JT8
V
DD
NOTE: Values shown are typical values.
V
V
DD
REG
MCU
C
BYPASS
C
BULK
+
10 µF
0.1 µF
V
SS
MC68HC08JT8
Technical Data
DD
281