MC68HC908JW32_09 Datasheet, PDF (18/232 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

General Description
• External asynchronous interrupt pin with internal pull-up (IRQ)
• 48-pin quad flat non-leaded package (QFN)
1.3 MCU Block Diagram
M68HC08 CPU
CPU
REGISTERS
ARITHMETIC/LOGIC
UNIT (ALU)
CONTROL AND STATUS REGISTERS — 96 BYTES
USER FLASH — 32,768 BYTES
USER RAM — 1,024 BYTES
MONITOR ROM — 1,472 BYTES
USER FLASH VECTOR SPACE — 48 BYTES
OSC1
OSC2
CGMXFC
OSCILLATORS AND
CLOCK GENERATOR MODULE
INTERNAL RC OSCILLATOR
X-TAL OSCILLATOR
PHASE-LOCKED LOOP
(1)(2) _RST
(1)(3) _IRQ
V_DD
V_SS
V_DDPLL
V_SSPLL
REG25V
REG33V
V_SS33
SYSTEM INTEGRATION
MODULE
EXTERNAL INTERRUPT
MODULE
COMPUTER OPERATING
PROPERLY MODULE
POWER-ON RESET
MODULE
POWER
INTERNAL REGULATOR
INTERNAL BUS
KEYBOARD INTERRUPT
MODULE
2-CHANNEL TIMER INTERFACE
MODULE
TIMEBASE
MODULE
BREAK
MODULE
LOW-VOLTAGE INHIBIT
MODULE
PS2 CLOCK GENERATOR
MODULE
SERIAL PERIPHERAL
INTERFACE MODULE
USB MODULE
USB ENDPOINT
PTA7/KBA7 ⁽³⁾
PTA6/KBA6 ⁽³⁾
PTA5/KBA5 ⁽³⁾
PTA4/KBA4 ⁽³⁾
PTA3/KBA3 ⁽³⁾
PTA2/KBA2 ⁽³⁾
PTA1/KBA1 ⁽³⁾
PTA0/KBA0 ⁽³⁾
PTB7 ^(2)(4)(5)
PTB6 ^(2)(4)(5)
PTB5 ⁽²⁾⁽⁴⁾
PTB4 ^(2)(4)(5)
PTB3 ^(2)(4)(5)
PTB2 ^(2)(4)(5)
PTB1 ⁽²⁾⁽⁴⁾
PTB0 ⁽²⁾⁽⁴⁾
PTC3
PTC2/T1CH1
PTC1/TCLK1
PTC0/T1CH0
PTD7 ⁽²⁾
PTD6
PTD5
PTD4
PTD3 ⁽²⁾
PTD2 ⁽²⁾
PTD1
PTD0
PTE7/SS
PTE6/MISO
PTE5/MOSI
PTE4/SPCLK
PTE3/D– ⁽²⁾⁽⁴⁾
PTE2/PS2CLK/D+ ⁽²⁾⁽⁴⁾
(1) Pin contains integrated pullup device.
(2) Pin contains configurable pullup device.
(3) Pin contains integrated pullup device when configured as KBI.
(4) Pin is open-drain when configured as output, with high current capability.
(5) Pin available on 52-pin LQFP only.
Figure 1-1. MC68HC908JW32 Block Diagram
MC68HC908JW32 Data Sheet, Rev. 6
18
Freescale Semiconductor