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Chapter 1 MC9S12HZ256 Device Overview
MC9S12HZ256 Data Sheet, Rev. 2.05
24
Freescale Semiconductor
1.1.3
Block Diagram
Figure 1-1. MC9S12HZ256 Block Diagram
EXTAL
XTAL
BKGD
XIRQ
Periodic Interrupt
COP Watchdog
Clock Monitor
Breakpoints
PLL
XFC
IRQ
ECLK
PA4
PA3
PA2
PA1
PA0
PA7
PA6
PA5
TEST
PB4
PB0
PB7
PB6
FP4
FP3
FP2
FP1
FP0
FP7
FP6
PE4
PE5
PE6
PE0
PE1
IOC2
IOC6
IOC0
IOC7
IOC1
IOC3
IOC4
IOC5
RXD1
TXD1
MISO
MOSI
PS4
PS5
PS0
PS1
PK3
PK7
PK0
PK1
SCK
SS
PS6
PS7
SPI
RXCAN0
TXCAN0
PM2
PM3
DDRA
DDRB
PTA
PTB
DDRE
PTE
PTK
DDRK
PTS
DDRS
PTM
DDRM
PK2
FP12
FP11
FP10
FP9
FP8
FP15
FP14
BP0
BP1
BP2
BP3
FP23
PL3
PL2
PL1
PL0
DDRL
PTL
FP19
FP18
FP17
FP16
PE7
PE3
PTE
DDRE
PE2
FP22
FP21
FP20
VLCD
LCD
SCI1
CAN0
MODB
MODA
RESET
VDDPLL
VSSPLL
S12 CPU
Clock and
Reset
Generation
Module
PTK
DDRK
FP13
PB5
PB3
PB2
PB1
FP5
PIX0
PIX1
PIX2
PIX3
ADDR0
ADDR1
ADDR2
ADDR3
ADDR4
ADDR5
ADDR6
ADDR7
ADDR8
ADDR9
ADDR10
ADDR11
ADDR12
ADDR13
ADDR14
ADDR15
PT0
PT1
PT2
PT3
PT4
PT5
PT6
PT7
PTT
DDRT
FP24
FP25
FP26
FP27
AN2
AN6
AN0
AN7
AN1
AN3
AN4
AN5
PAD3
PAD4
PAD5
PAD6
PAD7
PAD0
PAD1
PAD2
VRH
VRL
VDDA
VSSA
Analog to
Digital
Converter
DDRAD
VRH
VRL
VDDA
VSSA
256K, 128K, 64K, 32K Bytes Flash or ROM
2K Bytes EEPROM
12K, 6K, 4K, 2K Bytes RAM
Multiplexed
Address/Data
Bus
PPAGE
DATA15
DATA14
DATA13
DATA12
DATA11
DATA10
DATA9
DATA8
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
Multiplexed
Wide
Bus
Multiplexed
Narrow
Bus
ECS/ROMCTL
XADDR14
XADDR15
XADDR16
XADDR17
NOACC/XCLKS
LSTRB/TAGLO
R/W
VDDR
VDD1
VSS1,2
Voltage Regulator
Input Capture and
Output Compare
Timer
SDA
SCL
IIC
Driver
PL7
PL6
PL5
PL4
FP31
FP30
FP29
FP28
System
Integration
Module
Single-Wire Background
Debug Module
RXCAN1
TXCAN1
PM4
PM5
CAN1
M0C0M
M0C0P
PU0
PU1
PTU
DDRU
PWM0
SSD0
M0C1M
M0C1P
PU2
PU3
PWM1
M1C0M
M1C0P
PU4
PU5
PWM2
SSD1
M1C1M
M1C1P
PU6
PU7
PWM3
Pulse
Width
Modulator
PW2
PW0
PW1
PW3
PW4
PW5
PP3
PP4
PP5
PP0
PP1
PP2
PTP
DDRP
RXD0
TXD0
SCI0
AN10
AN14
AN8
AN15
AN9
AN11
AN12
AN13
AN10
AN14
AN8
AN15
AN9
AN11
AN12
AN13
KWAD2
KWAD6
KWAD0
KWAD7
KWAD1
KWAD3
KWAD4
KWAD5
M0COSM
M0COSP
M0SINM
M0SINP
M1COSM
M1COSP
M1SINM
M1SINP
PTAD
M2C0M
M2C0P
PV0
PV1
PTV
DDRV
PWM4
SSD2
MOTOR0,1, 2 3 Supply
VDDM1,2,3
VSSM1,2,3
M2C1M
M2C1P
PV2
PV3
PWM5
M3C0M
M3C0P
PV4
PV5
PWM6
SSD3
M3C1M
M3C1P
PV6
PV7
PWM7
M2COSM
M2COSP
M2SINM
M2SINP
M3COSM
M3COSP
M3SINM
M3SINP