MC68HC908JB8JDW Freescale Semiconductor, MC68HC908JB8JDW Datasheet - Page 35

• 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: -

1.5.3 Oscillator Pins (OSC1 and OSC2)
1.5.4 External Reset Pin (RST)
1.5.5 External Interrupt Pins (IRQ, PTE4/D–)
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
Freescale Semiconductor
The OSC1 and OSC2 pins are the connections for the on-chip oscillator
circuit.
A logic zero on the RST pin forces the MCU to a known start-up state.
RST is bidirectional, allowing a reset of the entire system. It is driven low
when any internal reset source is asserted. The RST pin contains an
internal pullup device to V
Module
IRQ is an asynchronous external interrupt pin. IRQ is also the pin to
enter monitor mode. The IRQ pin contains a software configurable pullup
device to V
(See
Section 13. External Interrupt
Figure 1-6. Regulator Supply Capacitor Configuration
(SIM).)
DD
. PTE4/D– can be programmed to trigger the IRQ interrupt.
General Description
V
V
REG
REG
DD
. (See
C
0.1 µF
> 4.7 µF
+
C
REGBYPASS
MCU
REGBULK
Section 8. System Integration
(IRQ).)
V
SS
General Description
Pin Assignments
Technical Data
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