UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 316

• Manufacturer Part Number: UPD78F0550MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0550MA-FAA-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 10MHz
• Number Of I /o: 12
• Core Processor: 78K/0
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Program Memory Size: 4KB (4K x 8)
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Peripherals: LVD, POR, PWM, WDT
• Connectivity: I²C, LIN, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

8.4 Operation of 8-Bit Timers H0 and H1
8.4.1 Operation as interval timer/square-wave output
is generated and the 8-bit timer counter Hn is cleared to 00H.
the CMP1n register is not detected even if the CMP1n register is set, timer output is not affected.
is output from TOHn.
316
TMHMDn
When the 8-bit timer counter Hn and compare register 0n (CMP0n) match, an interrupt request signal (INTTMHn)
Compare register 1n (CMP1n) is not used in interval timer mode. Since a match of the 8-bit timer counter Hn and
By setting bit 0 (TOENn) of timer H mode register n (TMHMDn) to 1, a square wave of any frequency (duty = 50%)
<1> Set each register.
<2> Count operation starts when TMHEn = 1.
<3> When the values of the 8-bit timer counter Hn and the CMP0n register match, the INTTMHn signal is
<4> Subsequently, the INTTMHn signal is generated at the same interval. To stop the count operation, clear
Remarks 1. For the setting of the output pin, refer to 8.3 (3) Port mode register 1 (PM1), port mode register 3
Setting
(i) Setting timer H mode register n (TMHMDn)
(ii) CMP0n register setting
generated and the 8-bit timer counter Hn is cleared to 00H.
TMHEn to 0.
TMHEn
The interval time is as follows if N is set as a comparison value.
2. For how to enable the INTTMHn signal interrupt, refer to CHAPTER 17 INTERRUPT FUNCTIONS.
3. 78K0/KY2-L, 78K0/KA2-L: n = 1
0
Figure 8-10. Register Setting During Interval Timer/Square-Wave Output Operation
Interval time = (N +1)/f
78K0/KB2-L, 78K0/KC2-L: n = 0, 1
(PM3).
CKSn2
0/1
CKSn1
0/1
CNT
CHAPTER 8 8-BIT TIMERS H0 AND H1
CKSn0
Preliminary User’s Manual U19111EJ2V1UD
0/1
TMMDn1
0
TMMDn0 TOLEVn
0
0/1
TOENn
0/1
Timer output setting
Default setting of timer output level
Interval timer mode setting
Count clock (f
Count operation stopped
CNT
) selection