UPD78F9212CS-CAB-A Renesas Electronics America, UPD78F9212CS-CAB-A Datasheet - Page 150

• 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: -

8.2
148
Watchdog timer enable
register (WDTE)
The watchdog timer consists of the following hardware.
Remarks 1. f
Configuration of Watchdog Timer
f
RL
f
X
/2
/2
2
4
2. f
Control registers
RL
X
: System clock oscillation frequency
: Low-speed internal oscillation clock oscillation frequency
controller
Clock
input
2
Item
Watchdog timer mode
register (WDTM)
0
Figure 8-1. Block Diagram of Watchdog Timer
counter
Table 8-3. Configuration of Watchdog Timer
16-bit
1
Clear
CHAPTER 8 WATCHDOG TIMER
1
Watchdog timer mode register (WDTM)
Watchdog timer enable register (WDTE)
2
2
or
2
2
Internal bus
13
20
11
18
/f
/f
/f
/f
User’s Manual U16994EJ6V0UD
X
X
RL
RL
WDCS4
to
to
Selector
WDCS3
3
WDCS2
WDCS1 WDCS0
Configuration
controller
Output
Internal reset signal
Option byte
(to set “low-speed
internal oscillator cannot be
stopped” or “low-speed
internal oscillator can be
stopped by software”)