mc68hc908jb8 Freescale Semiconductor, Inc, mc68hc908jb8 Datasheet - Page 31

• Manufacturer Part Number: mc68hc908jb8
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

(1), (2)
(1), (3)
(3.3 V)
OSC1
OSC2
V
RST
IRQ
V
V
REG
CONTROL AND STATUS REGISTERS — 64 BYTES
DD
SS
REGISTERS
USER FLASH MEMORY — 8,192 BYTES
CPU
USER FLASH VECTORS — 16 BYTES
MONITOR ROM — 976 BYTES
USER RAM — 256 BYTES
M68HC08 CPU
INTERNAL VOLTAGE REGULATOR
SYSTEM INTEGRATION
OSCILLATOR
ARITHMETIC/LOGIC
MODULE
MODULE
POWER
IRQ
UNIT (ALU)
Figure 1-1. MCU Block Diagram
(1) Pins have 5V logic.
(2) Pins have integrated pullup device.
(3) Pins have software configurable pullup device.
(4) Pins are open-drain when configured as output.
(5) Pins have 10mA sink capability.
(6) Pins have 25mA sink capability.
COMPUTER OPERATING PROPERLY
KEYBOARD INTERRUPT
LOW VOLTAGE INHIBIT
USB ENDPOINT 0, 1, 2
TIMER INTERFACE
POWER-ON RESET
INTERNAL BUS
MODULE
MODULE
MODULE
MODULE
MODULE
MODULE
MODULE
BREAK
USB
PTA7/KBA7
PTA0/KBA0
PTB7–PTB0
PTC7–PTC0
PTE4/D–
PTE3/D+
PTE2/TCH1
PTE1/TCH0
PTE0/TCLK
PTD7–PTD6
PTD5–PTD2
PTD1–PTD0
:
(3) (4) (5)
(3) (4) (5)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(4)
(4) (5)
(4) (6)