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| MC9RS08KB12 Datasheet, PDF (3/48 Pages) Freescale Semiconductor, Inc – MCU Block Diagram | |||
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1 MCU Block Diagram
The block diagram, Figure 1, shows the structure of the MC9RS08KB12 MCU.
MCU Block Diagram
VDD
VSS
VREFH
VREFL
VDDAD
VSSAD
RS08 CORE
CPU
BDC
RESET
RS08 SYSTEM CONTROL
RESETS AND INTERRUPTS
MODES OF OPERATION
POWER MANAGEMENT
COP
RTI
WAKEUP
LVD
12-CH 10-BIT
ANALOG-TO-DIGITAL
CONVERTER(ADC)
ANALOG COMPARATOR
(ACMP)
ADP[3:0]
ADP[7:4]
ADP[11:8]
ACMP+
ACMP-
ACMPO
8-BIT KEYBOARD
INTERRUPT(KBI)
KBIP[3:0]
KBIP[7:4]
SERIAL COMMUNICATION
INTERFACE (SCI)
TxD
RxD
2-CH TIMER/PWM
MODULE (TPM)
TPMCH0
TPMCH1
TCLK
MODULO TIMER
(MTIM1)
TCLK
VPP
USER FLASH
MC9RS08KB12 = 12 KB
MC9RS08KB8 = 8 KB
MODULO TIMER
(MTIM2)
TCLK
MC9RS08KB4 = 4 KB
MC9RS08KB2 = 2 KB
USER RAM
INTER-INTEGRATED
CIRCUIT MODULE (IIC)
SCL
SDA
MC9RS08KB12/KB8 = 254 BYTES
MC9RS08KB4/KB2 = 126 BYTES
XTAL
20 MHz INTERNAL CLOCK
SOURCE (ICS)
LOW-POWER OSCILLATOR
31.25 kHz to 39.0625 kHz
1 MHz to 16 MHz
(XOSC)
EXTAL
VDD
VSS
VOLTAGE REGULATOR
PTA0/KBIP0/TPMCH0/ADP0/ACMP+
PTA1/KBIP1/TPMCH1/ADP1/ACMPâ
PTA2/KBIP2/SDA/RxD/ADP2
PTA3/KBIP3/SCL/TxD/ADP3
PTA4/ACMPO/BKGD/MS2
PTA5/TCLK/RESET/VPP1
PTB0/KBIP4/RxD/ADP4
PTB1/KBIP5/TxD/ADP5
PTB2/KBIP6/ADP6
PTB3/KBIP7/ADP7
PTB4/TPMCH0
PTB5/TPMCH1
PTB6/SDA/XTAL
PTB7/SCL/EXTAL
PTC0/ADP8
PTC1/ADP9
PTC2/ADP10
PTC3/ADP11
NOTES:
1. PTA5/TCLK/RESET/VPP is an input-only pin when used as port pin
2. PTA4/ACMPO/BKGD/MS is an output-only pin when used as port pin
Figure 1. MC9RS08KB12 Series Block Diagram
2 Pin Assignments
This section shows the pin assignments in the packages available for the MC9RS08KB12 series.
MC9RS08KB12 Series MCU Data Sheet, Rev. 3
Freescale Semiconductor
3
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