MC908AZ60ACFU Freescale Semiconductor, MC908AZ60ACFU Datasheet - Page 244

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MC908AZ60ACFU

Manufacturer Part Number
MC908AZ60ACFU
Description
IC MCU FLASH 8.4MHZ 60K 64QFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet

Specifications of MC908AZ60ACFU

Core Processor
HC08
Core Size
8-Bit
Speed
8.4MHz
Connectivity
CAN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
52
Program Memory Size
60KB (60K x 8)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 15x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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Programmable Interrupt Timer (PIT)
21.4 PIT Counter Prescaler
The clock source can be one of the seven prescaler outputs. The prescaler generates seven clock rates
from the internal bus clock. The prescaler select bits, PPS[2:0], in the status and control register select
the PIT clock source.
The value in the PIT counter modulo registers and the selected prescaler output determines the frequency
of the periodic interrupt. The PIT overflow flag (POF) is set when the PIT counter value reaches the
modulo value programmed in the PIT counter modulo registers. The PIT interrupt enable bit, POIE,
enables PIT overflow CPU interrupt requests. POF and POIE are in the PIT status and control register.
21.5 Low-Power Modes
The WAIT and STOP instructions put the MCU in low power-consumption standby modes.
21.5.1 Wait Mode
The PIT remains active after the execution of a WAIT instruction. In wait mode the PIT registers are not
accessible by the CPU. Any enabled CPU interrupt request from the PIT can bring the MCU out of wait
mode.
244
PIT Status and Control Register (PSC)
PIT Counter Register High (PCNTH)
PIT Counter Register Low (PCNTL)
PIT Counter Modulo Register High
PIT Counter Modulo Register Low
Register Name
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
(PMODH)
(PMODL)
Register
Address
Table 21-1. PIT I/O Register Address Summary
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Figure 21-2. PIT I/O Register Summary
Bit 15
Bit 15
Bit 7
POF
Bit 7
Bit 7
$004B
0
0
0
0
1
1
PSC
=Unimplemented
POIE
PCNTH
14
14
$004C
6
0
0
6
0
1
6
1
PSTOP
PCNTL
13
13
$004D
5
1
0
5
0
1
5
1
PRST
PMODH
12
12
$004E
4
0
0
0
4
0
1
4
1
PMODL
11
11
$004F
3
0
0
0
3
0
1
3
1
PPS2
10
10
2
0
0
2
0
1
2
1
Freescale Semiconductor
PPS1
1
0
9
0
1
0
9
1
1
1
PPS0
Bit 0
Bit 8
Bit 0
Bit 8
Bit 0
0
0
0
1
1

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