MC68HC908EY16 Datasheet, PDF (106/278 Pages) Motorola, Inc – Microcontrollers

Keyboard Interrupt (KBD) Module
M68HC08 CPU
CPU
REGISTERS
ARITHMETIC/LOGIC
UNIT (ALU)
CONTROL AND STATUS REGISTERS
64 BYTES
USER FLASH
15,872 BYTES
USER RAM
512 BYTES
MONITOR ROM
310 BYTES
FLASH PROGRAMMING (BURN-IN) ROM
1024 BYTES
USER FLASH VECTOR SPACE
36 BYTES
OSC2
OSC1
INTERNAL CLOCK
GENERATOR MODULE
RST
IRQ
V_REFH
V_DDA
V_REFL
V_SSA
V_DD
V_SS
24 INTERNAL SYSTEM
INTEGRATION MODULE
SINGLE EXTERNAL IRQ
MODULE
10-BIT ANALOG-TO-DIGITAL
CONVERTER MODULE
POWER
INTERNAL BUS
SINGLE BREAKPOINT
BREAK MODULE
5-BIT KEYBOARD
INTERRUPT MODULE
2-CHANNEL TIMER INTERFACE
MODULE A
2-CHANNEL TIMER INTERFACE
MODULE B
ENHANCED
SERIAL COMMUNICATION
INTERFACE MODULE
COMPUTER OPERATING
PROPERLY MODULE
SERIAL PERIPHERAL
INTERFACE MODULE
CONFIGURATION REGISTER
MODULE
PERIODIC WAKEUP
TIMEBASE MODULE
ARBITER
MODULE
PRESCALER
MODULE
BEMF MODULE
PTA6/SS
PTA5/SPSCK
PTA4/KBD4
PTA3/KBD3
PTA2/KBD2
PTA1/KBD1
PTA0/KBD0
PTB7/AD7/TBCH1
PTB6/AD6/TBCH0
PTB5/AD5
PTB4/AD4
PTB3/AD3
PTB2/AD2
PTB1/AD1
PTB0/AD0
PTC4/OSC1
PTC3/OSC2
PTC2/MCLK
PTC1/MOSI
PTC0/MISO
PTD1/TACH1
PTD0/TACH0
PTE1/RxD
PTE0/TxD
POWER-ON RESET
MODULE
SECURITY
MODULE
Figure 10-1. Block Diagram Highlighting Keyboard Block and Pins
MC68HC908EY16 • MC68HC908EY8 Data Sheet, Rev. 10
106
Freescale Semiconductor