Datasheet

MCU Block Diagram
MC9RS08KA8 Series MCU Data Sheet, Rev. 4
Freescale Semiconductor 3
1 MCU Block Diagram
The block diagram, Figure 1, shows the structure of the MC9RS08KA8 MCU.
Figure 1. MC9RS08KA8 Series Block Diagram
2 Pin Assignments
This section shows the pin assignments in the packages available for the MC9RS08KA8 series.
KEYBOARD INTERRUPT
USER FLASH
USER RAM
RS08 CORE
CPU
BDC
16-BIT TIMER/PWM
MODULE (TPM)
PORT B
RS08 SYSTEM CONTROL
RESETS AND INTERRUPTS
MODES OF OPERATION
POWER MANAGEMENT
VOLTAGE REGULATOR
PORT A
LOW-POWER OSCILLATOR
20 MHz INTERNAL CLOCK
SOURCE (ICS)
31.25 kHz to 39.0625 kHz
1 MHz to 5 MHz
(XOSC)
V
SS
V
DD
ANALOG-TO-DIGITAL
CONVERTER (ADC)
10-BIT
PORT C
(MC9RS08KA8 = 8192 BYTES)
(MC9RS08KA4 = 4096 BYTES)
(MC9RS08KA8 = 254 BYTES)
(MC9RS08KA4 = 126 BYTES)
IIC MODULE(IIC)
ANALOG COMPARATOR
(ACMP)
8-BIT TIMER
(MTIM1 and MTIM2)
V
PP
COP
WAKEUP
RTI
LVD
PTC0/ADP8
PTB3/KBIP7/ADP7
PTB2/KBIP6/ADP6
PTB1/KBIP5/ADP5
PTB0/KBIP4/ADP4
PTA2/KBIP2/SDA/ADP2
PTA3/KBIP3/SCL/ADP3
PTA1/KBIP1/TPMCH1/ADP1/ACMP–
PTA0/KBIP0/TPMCH0/ADP0/ACMP+
PTC1/ADP9
PTC2/ADP10
PTB4/TPMCH0
PTC3/ADP11
PTA5/TCLK/RESET
/V
PP
PTA4/ACMPO/BKGD/MS
PTB7/SCL/EXTAL
PTB6/SDA/XTAL
PTB5/TPMCH1