Technical data
Analog Integrated Circuit Device Data
2 Freescale Semiconductor
908E621
INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
Figure 2. 908E621 Simplified Internal Block Diagram
M68HC08 CPU
ALU
PORT B
DDRB
PTB0/AD0
ADOUT
Analog
Multiplexer
Analog Port
with Current
Source
CPU
Registers
DDRE
PORT E
PTE1/RXD
PTE0/TXD
PTB0/AD0
PTB2/AD2
PTB3/AD3
PTB4/AD4
PTB5/AD5
PTB6/AD6/TBCH0
PTB7/AD7/TBCH1
DDRD
PORT D
PTD1/TACH1
PTD0/TACH0
PORT C
DDRC
PTC4/OSC1
PTC3/OSC2
PTC2/MCLK
PTC1/MOSI
PTC0/MISO
BEMF Module
Prescaler Module
Arbiter Module
Periodic Wake-up
Timebase Module
Configuration
Register Module
Serial Peripheral
Interface Module
Computer Operating
Properly Module
Enhanced Serial
Communication
Interface Module
2-channel Timer
Interface Module B
2-channel Timer
Interface Module A
5-Bit Keyboard
Interrupt Module
Single Breakpoint
Break Module
DDRA
PORT A
PTA0/KBD0
PTA1/KBD1
PTA2/KBD2
PTA3/KBD3
PTA4/KBD4
PTA5/SPSCK
PTA6/SS
Security Module
Power-ON
Reset Module
POWER
VSS
VDD
10 Bit Analog-to-
Digital Converter
Module
VSSA
VREFL
VDDA
VREFH
Single External
IRQ Module
IRQ
24 Integral System
Integration Module
RST
Internal Clock
Generator Module
OSC1
OSC2
User Flash Vector
Space, 36 Bytes
Flash programming
(Burn-in), ROM 1024 Bytes
Monitor ROM, 310 Bytes
User RAM, 512 Bytes
User Flash, 15,872 Bytes
Control and Status
Register, 64 Bytes
Internal Bus
FLSVPP
PTD1/TACH1
PTC4/OSC1
PTC3/OSC2
PTC2/MCLK
PTB5/AD5
PTB4/AD4
PTB3/AD3
PTA4/KBD4
PTA3/KBD3
PTA2/KBD2
PTA1/KBD1
PTA0/KBD0
VDDA/VREFH
EVDD
EVSS
VSSA/VREFL
RST
IRQ
RST_A
IRQ_A
PTE1/RXD
PTD0/TACH0
LIN
TESTMODE
VSUP[1:8]
GND[1:4]
PTB0/AD0
PTA5/SPSCK
SPSCK
MOSI
PTC1/MOSI
MISO
PTC0/MISO
SS
PWM
PTA6/SS
PTD0/TACH0
PTE0/TXD
PTE1/RXD RXD
TXD
SPI
&
CONTROL
HALLPORT
Half Bridge
Driver &
Diagnostic
Half Bridge
Driver &
Diagnostic
Half Bridge
Driver &
Diagnostic
Half Bridge
Driver &
Diagnostic
High Side Driver
& Diagnostic
High Side Driver
& Diagnostic
High Side Driver
& Diagnostic
Autonomous
Watchdog
Reset
Control
LIN
Physical Layer
Wakeup Port
Voltage
Regulator
Switched VDD
Driver &
Diagnostic
A0CST
A0
H0
HB4
HB3
HB2
HB1
HS3
HS2
HS1[a:b]
L0
HVDD
VDD
VSS