Datasheet

MC68HC11D3 and MC68HC11D0
MC68HC711D3 Data Sheet, Rev. 2.1
126 Freescale Semiconductor
A.2 Block Diagram
Figure A-1. MC68HC11D3 Block Diagram
PORT A
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
MODE CONTROL INTERRUPT CONTROL
MODA/LIR
MODB/V
STBY
RESET IRQ XIRQ XTAL EXTAL E
CLOCK LOGIC
OSCILLATOR
PAI/OC1
OC2/OC1
OC3/OC1
OC4/OC1
IC4/OC5/OC1
IC1
IC2
IC3
TIMER
PULSE ACCUMULATOR
COP
PERIODIC INTERRUPT
MC68HC11D3 — 4 KBYTES ROM
PD7/R/W
PD6/AS
PD5 PD4 PD3 PD2 PD1 PD0
DATA DIRECTION REGISTER D
PORT D
DATA DIRECTION REGISTER C
PORT C
DATA DIRECTION REGISTER B
PORT B
A15 A14 A13 A12 A11 A10 A9 A8 A7/D7 A6/D6 A5/D5 A4/D4 A3/D3 A2/D2 A1/D1 A0/D0
MULTIPLEXED ADDRESS/DATA BUS
192 BYTES RAM
SERIAL
PERIPHERAL
INTERFACE
(SPI)
SERIAL
COMMUNICATIONS
INTERFACE
(SCI)
MC68HC11D3
CPU CORE
SS SCK MOSI MISO
TxD
RxD
V
SS
V
DD
EV
SS
MC68HC11D0 — 0 BYTES ROM