Datasheet

MCU Block Diagram
MC9S08FL16 Series Data Sheet, Rev. 3
Freescale Semiconductor 3
1 MCU Block Diagram
The block diagram, Figure 1, shows the structure of MC9S08FL16 series MCU.
Figure 1. MC9S08FL16 Series Block Diagram
2-CH TIMER/PWM
MODULE (TPM2)
VOLTAGE REGULATOR
PORT A
20 MHz INTERNAL CLOCK
SOURCE (ICS)
ANALOG-TO-DIGITAL
CONVERTER (ADC)
12-CH 8-BIT
4-CH TIMER/PWM
MODULE (TPM1)
ADP[11:0]
V
DD
V
SS
RESET
SERIAL COMMUNICATIONS
INTERFACE (SCI)
TxD
PTA0/ADP0
PTA1/ADP1
PTA2/ADP2
PTA3/ADP3
PTA4/BKGD/MS
PTA5/IRQ/TCLK/RESET
PTA6/TPM2CH0
PTA7/TPM2CH1
TPM2CH[1:0]
IRQ
TPM1CH[3:0]
PORT B
PTB0/RxD/ADP4
PTB1/TxD/ADP5
PTB2/ADP6
PTB3/ADP7
PTB4/TPM1CH0
PTB5/TPM1CH1
PTB6/XTAL
PTB7/EXTAL
PORT C
PTC0/ADP8
PTC1/ADP9
PTC2/ADP10
PTC3/ADP11
PTC4
PTC5
PTC6
PTC7
PORT D
PTD0
PTD1
PTD2/TPM1CH2
PTD3/TPM1CH3
PTD4
PTD5
RxD
EXTERNAL OSCILLATOR
EXTAL
XTAL
USER FLASH
USER RAM
HCS08 CORE
CPU
BDC
HCS08 SYSTEM CONTROL
RESETS AND INTERRUPTS
MODES OF OPERATION
POWER MANAGEMENT
COP
LVD
MC9S08FL16 — 1,024 BYTES
MC9S08FL16 — 16,384 BYTES
IRQ
ON-CHIP ICE AND
DEBUG MODUE (DBG)
MC9S08FL8 — 8,192 BYTES
MC9S08FL8 — 768 BYTES
V
REFH
V
REFL
V
DDA
V
SSA
NOTE
1. PTA4 is output only when used as port pin.
2. PTA5 is input only when used as port pin.
16-BIT MODULO TIMER
(MTIM16)
TCLK
INTERRUPT PRIORITY
SOURCE (XOSC)
CONTROLLER (IPC)