MC908GR48ACFAE Freescale Semiconductor, MC908GR48ACFAE Datasheet - Page 235
![IC MCU 48K FLASH 8MHZ 48-LQFP](/photos/12/27/122793/mc908gr48acfae_sml.jpg)
MC908GR48ACFAE
Manufacturer Part Number
MC908GR48ACFAE
Description
IC MCU 48K FLASH 8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908GR32ACFJE.pdf
(314 pages)
Specifications of MC908GR48ACFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
37
Program Memory Size
48KB (48K x 8)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 24x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
Processor Series
HC08GR
Core
HC08
Data Bus Width
8 bit
Data Ram Size
1.5 KB
Interface Type
ESCI/SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
53
Number Of Timers
8
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, DEMO908GZ60E, M68CBL05CE, M68EML08GPGTE
Minimum Operating Temperature
- 40 C
On-chip Adc
24-ch x 10-bit
Controller Family/series
HC08
No. Of I/o's
37
Ram Memory Size
1.5KB
Cpu Speed
8MHz
No. Of Timers
2
Embedded Interface Type
SCI, SPI
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908GR48ACFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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PS[2:0] — Prescaler Select Bits
17.8.2 TIM1 Counter Registers
The two read-only TIM1 counter registers contain the high and low bytes of the value in the TIM1 counter.
Reading the high byte (T1CNTH) latches the contents of the low byte (T1CNTL) into a buffer. Subsequent
reads of T1CNTH do not affect the latched T1CNTL value until T1CNTL is read. Reset clears the TIM1
counter registers. Setting the TIM1 reset bit (TRST) also clears the TIM1 counter registers.
Freescale Semiconductor
These read/write bits select one of the seven prescaler outputs as the input to the TIM1 counter as
Table 17-1
Address: $0021
Address: $0022
shows. Reset clears the PS[2:0] bits.
If you read T1CNTH during a break interrupt, be sure to unlatch T1CNTL
by reading T1CNTL before exiting the break interrupt. Otherwise, T1CNTL
retains the value latched during the break.
Reset:
Reset:
Read:
Read:
Write:
Write:
MC68HC908GR60A • MC68HC908GR48A • MC68HC908GR32A Data Sheet, Rev. 5
PS2
0
0
0
0
1
1
1
1
Figure 17-6. TIM1 Counter Registers (T1CNTH:T1CNTL)
Bit 15
Bit 7
Bit 7
Bit 7
0
0
PS1
0
0
1
1
0
0
1
1
T1CNTH
T1CNTL
= Unimplemented
Bit 14
Bit 6
6
0
6
0
Table 17-1. Prescaler Selection
PS0
Bit 13
Bit 5
0
1
0
1
0
1
0
1
5
0
5
0
NOTE
Bit 12
Bit 4
4
0
4
0
Bit 11
Bit 3
Internal bus clock ÷ 16
Internal bus clock ÷ 32
Internal bus clock ÷ 64
3
0
3
0
Internal bus clock ÷ 1
Internal bus clock ÷ 2
Internal bus clock ÷ 4
Internal bus clock ÷ 8
TIM1 Clock Source
Not available
Bit 10
Bit 2
2
0
2
0
Bit 9
Bit 1
1
0
1
0
Input/Output Registers
Bit 0
Bit 8
Bit 0
Bit 0
0
0
235
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