mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 24

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 1 MC9S12E256 Device Overview (MC9S12E256DGV1)
1.1.3
24
RESET
EXTAL
PLL 2.5V
Multiplexed
Wide Bus
Multiplexed
Narrow Bus
VDDPLL
VDDR
BKGD
VSSPLL
VSSR
TEST
XTAL
Signals shown in Bold are not available on the 80 Pin Package
Voltage Regulator 3.3V/5V
Block Diagram
XFC
PK0
PK1
PK2
PK3
PK4
PK5
PK6
PK7
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
VDDR
VSSR
Single-wire Background
MODC/TAGHI
CRG
Debug Module
256K Byte Flash EEPROM
DDRA
PTA
Multiplexed Address/Data Bus
Clock and
Reset
Generation
XADDR16
XADDR19
XCS
ECS
XADDR14
XADDR15
XADDR17
XADDR18
XIRQ
IRQ
R/W
LSTRB/TAGLO
ECLK
MODA/IPIPE0
MODB/IPIPE1
NOACC/XCLKS
Voltage Regulator
16K Byte RAM
Internal Logic 2.5V
I/O Driver 3.3V/5V
VDD1,2
VSS1,2
VDDX
VSSX
Figure 1-1. MC9S12E256 Block Diagram
Debugger(DBG12)
Periodic Interrupt
COP Watchdog
MC9S12E256 Data Sheet, Rev. 1.08
Clock Monitor
Breakpoints
CPU12
Integration
DDRB
System
Module
PTB
(SIM)
ADC/DAC 3.3V/5V
Voltage Reference
VDDA
VSSA
VRH
VRL
PWM
TIM2
SCI0
SCI1
SPI
SCI2
IIC
PMF
ADC
TIM0
TIM1
IOC24
IOC25
IOC26
IOC27
PW12
PW13
PW14
PW15
PW10
PW11
DAC1
AN12
AN13
AN14
AN15
DAC0
AN10
AN11
AN8
AN9
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
FAULT3
KWAD8
KWAD9
KWAD10
KWAD11
KWAD12
KWAD13
KWAD14
KWAD15
FAULT1
KWAD0
KWAD1
KWAD2
KWAD3
KWAD4
KWAD5
KWAD6
KWAD7
FAULT2
FAULT0
IOC04
IOC05
IOC06
IOC07
IOC14
IOC15
IOC16
IOC17
MUX
RXD0
RXD1
PW02
PW04
TXD0
TXD1
PW00
PW01
PW03
PW05
MISO
MOSI
RXD2
TXD2
DAO0
DAO1
SCK
SDA
SCL
IS2
IS0
IS1
SS
Freescale Semiconductor
PP0
PP1
PP2
PP3
PP4
PP5
PQ0
PQ1
PQ2
PQ3
PQ4
PQ5
PQ6
PS0
PS1
PS2
PS3
PS4
PS5
PS6
PS7
PT0
PT1
PT2
PT3
PT4
PT5
PT6
PT7
PU0
PU1
PU2
PU3
PU4
PU5
PU6
PU7
PAD0
PAD1
PAD2
PAD3
PAD4
PAD5
PAD6
PAD7
PAD8
PAD9
PAD10
PAD11
PAD12
PAD13
PAD14
PAD15
PM0
PM1
PM3
PM4
PM5
PM6
PM7