UPD78F9200MA-CAC-A Renesas Electronics America, UPD78F9200MA-CAC-A Datasheet - Page 130
UPD78F9200MA-CAC-A
Manufacturer Part Number
UPD78F9200MA-CAC-A
Description
MCU 8BIT 1KB FLASH 128B RAM
Manufacturer
Renesas Electronics America
Series
78K0S/Kx1+r
Datasheet
1.UPD78F9200MA-CAC-A.pdf
(342 pages)
Specifications of UPD78F9200MA-CAC-A
Package / Case
*
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Speed
10MHz
Number Of I /o
7
Core Processor
78K0S
Program Memory Type
FLASH
Ram Size
128 x 8
Program Memory Size
1KB (1K x 8)
Data Converters
A/D 4x10b
Oscillator Type
Internal
Peripherals
LVD, POR, PWM, WDT
Core Size
8-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
UPD78F9200MA-CAC-A
Manufacturer:
NEC
Quantity:
20 000
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128
(17) Changing compare register during timer operation
<1> With the 16-bit timer capture/compare register 0n0 (CR0n0) used as a compare register, when changing
<2> If CR010 is changed during timer counting without performing processing <1> above, the value in
Remark n = 0 or 1
CR0n0 around the timing of a match between 16-bit timer counter 00 (TM00) and 16-bit timer
capture/compare register 0n0 (CR0n0) during timer counting, the change timing may conflict with the
timing of the match, so the operation is not guaranteed in such cases. To change CR0n0 during timer
counting, INTTM000 interrupt servicing performs the following operation.
<Changing cycle (CR000)>
1. Disable the timer output inversion operation at the match between TM00 and CR000 (TOC001 = 0).
2. Disable the INTTM000 interrupt (TMMK000 = 1).
3. Rewrite CR000.
4. Wait for 1 cycle of the TM00 count clock.
5. Enable the timer output inversion operation at the match between TM00 and CR000 (TOC001 = 1).
6. Clear the interrupt request flag of INTTM000 (TMIF000 = 0).
7. Enable the INTTM000 interrupt (TMMK000 = 0).
<Changing duty (CR010)>
1. Disable the timer output inversion operation at the match between TM00 and CR010 (TOC004 = 0).
2. Disable the INTTM000 interrupt (TMMK000 = 1).
3. Rewrite CR010.
4. Wait for 1 cycle of the TM00 count clock.
5. Enable the timer output inversion operation at the match between TM00 and CR010 (TOC004 = 1).
6. Clear the interrupt request flag of INTTM000 (TMIF000 = 0).
7. Enable the INTTM000 interrupt (TMMK000 = 0).
While interrupts and timer output inversion are disabled (1 to 4 above), timer counting is continued. If
the value to be set in CR0n0 is small, the value of TM00 may exceed CR0n0. Therefore, set the value,
considering the time lapse of the timer clock and CPU after an INTTM000 interrupt has been generated.
CR010 may be rewritten twice or more, causing an inversion of the output level of the TO00 pin at each
rewrite.
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00 ( PD78F920x ONLY)
User’s Manual U18172EJ3V0UD
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