UPD78F9221CS-CAC-A Renesas Electronics America, UPD78F9221CS-CAC-A Datasheet - Page 132

• Manufacturer Part Number: UPD78F9221CS-CAC-A
• Description: MCU 8BIT 2KB FLASH 20PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9221CS-CAC-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

130
(1) 8-bit compare register 80 (CR80)
(2) 8-bit timer counter 80 (TM80)
This 8-bit register always compares its set value with the count value of 8-bit timer/counter 80 (TM80). It
generates an interrupt request signal (INTTM80) if the two values match.
CR80 is set by using an 8-bit memory manipulation instruction. A value of 00H to FFH can be set to this
register.
Reset signal generation makes the contents of this register undefined.
Caution When changing the value of CR80, be sure to stop the timer operation. If the value of CR80
This 8-bit register counts the count pulses.
The value of TM80 can be read by using an 8-bit memory manipulation instruction.
Reset signal generation clears TM80 to 00H.
Address: FFCDH
Address: FFCEH
Symbol
Symbol
CR80
TM80
is changed with the timer operation enabled, a match interrupt request signal is generated
immediately and the timer may be cleared.
Figure 7-2. Format of 8-bit Compare Register 80 (CR80)
7
7
Figure 7-3. Format of 8-bit Timer Counter 80 (TM80)
After reset: 00H
After reset: Undefined
6
6
CHAPTER 7 8-BIT TIMER 80
User’s Manual U16898EJ6V0UD
5
5
R
4
4
W
3
3
2
2
1
1
0
0