DEMO9S08EL32 Freescale Semiconductor, DEMO9S08EL32 Datasheet - Page 271

• Manufacturer Part Number: DEMO9S08EL32
• Description: BOARD DEMO FOR 9S08 EL MCU
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S08EL32

• Contents: Evaluation Board
• Processor To Be Evaluated: MC9S08EL32
• Data Bus Width: 8 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 12 V
• Silicon Manufacturer: Freescale
• Core Architecture: HCS08
• Core Sub-architecture: HCS08
• Silicon Core Number: MC9S08
• Silicon Family Name: S08EL
• Rohs Compliant: Yes
• For Use With/related Products: MC9S08EL32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

15.1.3
The block diagram for the RTC module is shown in
15.2
The RTC does not include any off-chip signals.
15.3
The RTC includes a status and control register, an 8-bit counter register, and an 8-bit modulo register.
Refer to the direct-page register summary in the memory section of this document for the absolute address
assignments for all RTC registers.This section refers to registers and control bits only by their names and
relative address offsets.
Table 15-1
Freescale Semiconductor
Background
Mode
ERCLK
IRCLK
LPO
External Signal Description
Register Definition
RTCMOD
RTCCNT
RTCSC
is a summary of RTC registers.
Block Diagram
Name
RTCLKS[0]
Prescaler
Divide-By
Source
RTCLKS
MC9S08EL32 Series and MC9S08SL16 Series Data Sheet, Rev. 3
Select
Clock
Figure 15-2. Real-Time Counter (RTC) Block Diagram
RTCPS
W
W
W
R
R
R
Clock
RTC
Table 15-1. RTC Register Summary
RTIF
7
8-Bit Comparator
6
8-Bit Counter
8-Bit Modulo
RTCLKS
(RTCMOD)
(RTCCNT)
Figure
5
15-2.
RTIE
4
V
RTCMOD
RTCCNT
DD
E
Write 1 to
D
RTIF
R
Q
3
RTIE
Real-Time Counter (S08RTCV1)
2
RTCPS
RTIF
1
Interrupt
Request
RTC
0
273