MC908JB8ADWE Freescale Semiconductor, MC908JB8ADWE Datasheet - Page 10

• 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

Table of Contents
Technical Data
10
8.1
8.2
8.3
8.3.1
8.3.2
8.3.3
8.4
8.4.1
8.4.2
8.4.2.1
8.4.2.2
8.4.2.3
8.4.2.4
8.4.2.5
8.4.2.6
8.4.2.7
8.5
8.5.1
8.5.2
8.5.3
8.6
8.6.1
8.6.1.1
8.6.1.2
8.6.2
8.6.2.1
8.6.3
8.6.4
8.6.5
8.7
8.7.1
8.7.2
8.8
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
SIM Bus Clock Control and Generation . . . . . . . . . . . . . . . . . . 96
Reset and System Initialization. . . . . . . . . . . . . . . . . . . . . . . . . 97
SIM Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Exception Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
SIM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Section 8. System Integration Module (SIM)
Bus Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Clock Startup from POR or LVI Reset . . . . . . . . . . . . . . . . . 97
Clocks in Stop Mode and Wait Mode . . . . . . . . . . . . . . . . . . 97
External Pin Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Active Resets from Internal Sources . . . . . . . . . . . . . . . . . . 99
SIM Counter During Power-On Reset . . . . . . . . . . . . . . . . 103
SIM Counter During Stop Mode Recovery . . . . . . . . . . . . . 104
SIM Counter and Reset States. . . . . . . . . . . . . . . . . . . . . . 104
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Interrupt Status Registers. . . . . . . . . . . . . . . . . . . . . . . . . . 108
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Break Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Status Flag Protection in Break Mode . . . . . . . . . . . . . . . . 110
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
Universal Serial Bus Reset . . . . . . . . . . . . . . . . . . . . . . 102
Registers Values After Different Resets. . . . . . . . . . . . . 102
Hardware Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Power-On Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
Computer Operating Properly (COP) Reset. . . . . . . . . . 101
Illegal Opcode Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Illegal Address Reset . . . . . . . . . . . . . . . . . . . . . . . . . . .101
Low-Voltage Inhibit (LVI) Reset . . . . . . . . . . . . . . . . . . . 102
SWI Instruction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Interrupt Status Register 1 . . . . . . . . . . . . . . . . . . . . . . . 109
Table of Contents
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
Freescale Semiconductor