Freescale Semiconductor, Inc.
General Description
1.5 MC68HC912DG128 Block Diagram
VRH0
VRL0
VDDA
VSSA
VRH0
VRL0
VRH1
VRL1
VDDA
VSSA
VRH1
VRL1
VDDA
VSSA
ATD0
ATD1
128K byte flash EEPROM
VFP
VSTBY
8K byte RAM
AN00
AN01
AN02
AN03
AN04
AN05
AN06
AN07
PAD00
AN10
AN11
AN12
AN13
AN14
AN15
AN16
AN17
PAD10
PAD11
PAD12
PAD13
PAD14
PAD15
PAD16
PAD17
PAD01
PAD02
PAD03
PAD04
PAD05
PAD06
PAD07
0
1
2K byte EEPROM
A
A
R
R
CPU12
P
OP
Periodic interrupt
Single-wire
background
debug module
IOC0
PT0
PT1
PT2
PT3
PT4
PT5
PT6
PT7
COP watchdog
Clock monitor
Breakpoints
BKGD
IOC1
IOC2
IOC3
IOC4
IOC5
IOC6
IOC7
Enhanced
capture
timer
XFC
VDDPLL
VSSPLL
Clock
Generation
module
PLL
RxD0
TxD0
RxD1
TxD1
PS0
PS1
PS2
PS3
SCI0
SCI1
EXTAL
XTAL
RESET
SDI/MISO
PS4
PS5
PS6
PS7
SDO/MOSI
SCK
SPI
SS
PE0
PE1
PE2
PE3
PE4
PE5
XIRQ
IRQ
R/W
LSTRB
ECLK
MODA
MODB
DBE/CAL
Lite
integration
module
(LIM)
PW0
PW1
PW2
PW3
PP0
PP1
PP2
PP3
PWM
PE6
PE7
PIX0
PK0
PK1
PK2
PK3
PK7
PPAGE
PIX1
PIX2
I/O
ECS
SCL
SDA
PIB7
PIB6
PIB5
PIB4
IIC
Multiplexed Address/Data Bus
I/O
TxCAN0
RxCAN0
CAN0
CAN1
DDRA
DDRB
TxCAN1
RxCAN1
PORT A
PORT B
VDD ×2
VSS ×2
KWH7
KWH6
KWH5
KWH4
KWH3
KWH2
KWH1
KWH0
PH7
PH6
PH5
PH4
PH3
PH2
PH1
PH0
Power for internal circuitry
VDDX ×2
VSSX ×2
Wide
bus
KWU
KWJ7
KWJ6
KWJ5
KWJ4
KWJ3
KWJ2
KWJ1
KWJ0
PJ7
PJ6
PJ5
PJ4
PJ3
PJ2
PJ1
PJ0
Power for I/O drivers
Narrow bus
Technical Data
MC68HC912DG128 — Rev 3.0
General Description
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