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| MC9S08SE8 Datasheet, PDF (3/38 Pages) Freescale Semiconductor, Inc – 8-Bit HCS08 Central Processor Unit | |||
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1 MCU Block Diagram
The block diagram, Figure 1, shows the structure of the MC9S08SE8 series MCUs.
MCU Block Diagram
HCS08 CORE
CPU
BDC
BKGD/MS
DEBUG MODULE (DBG)
HCS08 SYSTEM CONTROL
RESETS AND INTERRUPTS
MODES OF OPERATION
IRQ
POWER MANAGEMENT
COP
IRQ
LVD
USER FLASH
(MC9S08SE8 = 8192 BYTES)
(MC9S08SE4 = 4096 BYTES)
REAL-TIME COUNTER (RTC)
KEYBOARD INTERRUPT
MODULE (KBI)
2-CHANNEL TIMER/PWM
MODULE (TPM1)
KBIP7âKBIP0
TCLK
TPM1CH1âTPM1CH0
USER RAM
(MC9S08SE8 = 512 BYTES)
(MC9S08SE4 = 256 BYTES)
20 MHz INTERNAL CLOCK
SOURCE (ICS)
LOW-POWER OSCILLATOR
31.25 kHz to 38.4 kHz
1 MHz to 16 MHz
(XOSC)
EXTAL
XTAL
VSS
VDD
VOLTAGE REGULATOR
SERIAL COMMUNICATIONS
INTERFACE MODULE (SCI)
1-CHANNEL TIMER/PWM
MODULE (TPM2)
RxD
TxD
TCLK
TPM2CH0
VSSA/VREFL
VDDA/VREFH
VSSA
VDDA
VREFL
VREFH
10-CHANNEL, 10-BIT
ANALOG-TO-DIGITAL
CONVERTER (ADC)
ADP9âADP0
pins not available on 16-pin package
Notes:
When PTA4 is configured as BKGD, pin is bi-directional.
For the 16-pin package: VSSA/VREFL and VDDA/VREFH are double bonded to VSS and VDD respectively.
Figure 1. MC9S08SE8 Series Block Diagram
PTA7/TPM1CH1/ADP5
PTA6/TPM1CH0/ADP4
PTA5/IRQ/TCLK/RESET
PTA4/BKGD/MS
PTA3/KBIP3/ADP3
PTA2/KBIP2/ADP2
PTA1/KBIP1/TPM1CH1/ADP1
PTA0/KBIP0/TPM1CH0/ADP0
PTB7/EXTAL
PTB6/XTAL
PTB5
PTB4/TPM2CH0
PTB3/KBIP7/ADP9
PTB2/KBIP6/ADP8
PTB1/KBIP5/TxD/ADP7
PTB0/KBIP4/RxD/ADP6
PTC7
PTC6
PTC5
PTC4
PTC3
PTC2
PTC1
PTC0
MC9S08SE8 Series MCU Data Sheet, Rev. 3
Freescale Semiconductor
3
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