UPD78F9212CS-CAB-A Renesas Electronics America, UPD78F9212CS-CAB-A Datasheet - Page 86

• Manufacturer Part Number: UPD78F9212CS-CAB-A
• Description: MCU 8BIT 4KB FLASH 16PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9212CS-CAB-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 13
• Program Memory Size: 4KB (4K 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: -
• Connectivity: -

(2) Crystal/ceramic oscillator
84
Notes 1. Operation stop time is 276 s (MIN.), 544 s (TYP.), and 1.074 ms (MAX.).
If crystal/ceramic oscillation is selected by the option byte, a clock frequency of 2 MHz to 10 MHz can be selected
and the accuracy of processing is improved because the frequency deviation is small, as compared with high-
speed internal oscillation (8 MHz (TYP.)).
Figures 5-10 and 5-11 show the timing chart and status transition diagram of default start by the crystal/ceramic
oscillator.
(a) The internal reset signal is generated by the power-on-clear function on power application, the option byte is
(b) After high-speed internal oscillation clock is generated, the option byte is referenced and the system clock is
(c) If the system clock is the crystal/ceramic oscillator clock, it starts operating as the CPU clock after clock
referenced after reset, and the system clock is selected.
selected. In this case, the crystal/ceramic oscillator clock is selected as the system clock.
oscillation is stabilized. The wait time is selected by the option byte. For details, refer to CHAPTER 15
OPTION BYTE.
2. The clock oscillation stabilization time for default start is selected by the option byte. For details, refer to
Internal reset
System clock
CPU clock
released is selected by the oscillation stabilization time select register (OSTS).
CHAPTER 15 OPTION BYTE. The oscillation stabilization time that elapses after the STOP mode is
RESET
V
Figure 5-10. Timing Chart of Default Start by Crystal/Ceramic Oscillator
DD
H
(a)
System clock is selected.
(Operation stops
CHAPTER 5 CLOCK GENERATORS
Option byte is read.
User’s Manual U16994EJ6V0UD
Note 1
)
(b)
Clock oscillation
stabilization
time
Note 2
(c)
PCC = 02H, PPCC = 02H
Crystal/ceramic
oscillator clock