MODEL CONTROL
MODA/
LIR
XTAL EXTAL E IRQ XIRQ/V
PPE*
RESET
MODB/
V
STBY
OSC
CLOCK LOGIC
INTERRUPT
LOGIC
ROM OR EPROM
(SEE TABLE)
SERIAL
PERIPHERAL
INTERFACE
SPI
SERIAL
COMMUNICATION
INTERFACE
SCI
A/D CONVERTER
V
DD
V
SS
V
RH
V
RL
EPROM
(SEE TABLE)
RAM
(SEE TABLE)
M68HC11 CPU
* V
PPE
applies only to devices with EPROM/OTPROM.
BUS EXPANSION
ADDRESS
ADDRESS/DATA
STROBE AND HANDSHAKE
PARALLEL I/O
CONTROL
PORT C
CONTROL
PORT D PORT EPORT BPORT A
TIMER
SYSTEM
COP
PULSE ACCUMULATOR
PERIODIC INTERRUPT
PAIPA7/PAI
PA6/OC2/OC1
PA5/OC3/OC1
PA4/OC4/OC1
PA3/OC5/IC4/OC1
PA2/IC1
PA2/IC2
PA0/IC3
PB7/ADDR15
PB6/ADDR14
PB5/ADDR13
PB4/ADDR12
PB3/ADDR11
PB2/ADDR10
PB1/ADDR9
PB0/ADDR8
PC7/ADDR7/DATA7
PC6/ADDR6/DATA6
PC5/ADDR5/DATA5
PC4/ADDR4/DATA4
PC3/ADDR3/DATA3
PC2/ADDR2/DATA2
PC1/ADDR1/DATA1
PC0/ADDR0/DATA0
STRB/R/W
STRA/AS
PD5/SS
PD4/SCK
PD3/MOSI
PD2/MISO
PD1/TxD
PD0/RxD
PE7/AN7
PE6/AN6
PE5/AN5
PE4/AN4
PE3/AN3
PE2/AN2
PE1/AN1
PE0/AN0
OC2
OC3
OC4
OC5/IC4/OC1
IC1
IC2
IC3
STRB
STRA
SS
SCK
MOSI
MISO
TxD
RxD
AS
R/W
DEVICE RAM ROM EPROM EEPROM
MC68HC11E0 512 – – –
MC68HC11E1 512 512
MC68HC11E9 512 12 K – 512
MC68HC711E9 512 – 12 K 512
MC68HC11E20 768 20 K – 512
MC68HC711E20 768 20 K 512
MC68HC811E2 256 – – 2048
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