MC9RS08KA1 FREESCALE [Freescale Semiconductor, Inc], MC9RS08KA1 Datasheet - Page 15

• Manufacturer Part Number: MC9RS08KA1
• Description: RS08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Chapter 1
MC9RS08KA2 Series Device Overview
1.1
The MC9RS08KA2 Series microcontroller unit (MCU) is an extremely low-cost, small pin count device
for home appliances, toys, and small geometry applications. This device is composed of standard on-chip
modules including, a very small and highly efficient RS08 CPU core, 63 bytes RAM, 2K bytes Flash, an
8-bit modulo timer, keyboard interrupt, and analog comparator. The device is available in small 6- and
8-pin packages.
1.2
The block diagram,
Freescale Semiconductor
V
V
DD
SS
Overview
MCU Block Diagram
MC9RS08KA2 — 2048 BYTES
MC9RS08KA1 — 1024 BYTES
WAKEUP
RESET AND STOP WAKEUP
BDC
RS08 SYSTEM CONTROL
USER RAM — 63 BYTES
INTERNAL REGULATOR
MODES OF OPERATION
RTI
POWER MANAGEMENT
INTERNAL CLOCK
POWER AND
USER FLASH
RS08 CORE
Figure
SOURCE
(ICS)
1-1, shows the structure of the MC9RS08KA2 Series MCU.
CPU
COP
LVD
Figure 1-1. MC9RS08KA2 Series Block Diagram
MC9RS08KA2 Series Data Sheet, Rev. 3
NOTES:
(1) Pins are software configurable with pullup/pulldown device if input port.
(2) Integrated pullup device enabled if reset enabled (RSTPE=1).
(3) These pins are not available in 6-pin package.
ANALOG COMPARATOR
INTERRUPT MODULE
5-BIT KEYBOARD
MODULO TIMER
MODULE
MODULE
(ACMP)
(MTIM)
(KBI)
5
ACMPO
ACMP+
ACMP-
TCLK
PTA0/KBIP0/ACMP+
PTA1/KBIP1/ACMP-
PTA2/KBIP2/TCLK/RESET/V
PTA3/ACMPO/BKGD/MS
PTA4/KBIP4
PTA5/KBIP5
(1),(3)
(1), (3)
(1)
(1)
PP
(1),( 2)
15