UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 39

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

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Note The internal flash memory capacity, internal high-speed RAM capacity, and internal expansion RAM capacity
Internal
memory
(bytes)
CAN buffer RAM
High-speed system clock
(oscillation frequency)
Internal high-speed oscillation
clock (oscillation frequency)
Internal low-speed oscillation
clock (oscillation frequency)
Subsystem clock
(oscillation frequency)
General-purpose registers
Minimum instruction execution
time
Instruction set
I/O ports
Timers
Clock output
Buzzer output
A/D converter
78K0/DF2 with CAN ( PD78F0846, 78F0847, 78F0848, 78F0849)
can be changed using the internal memory size switching register (IMS) and the internal expansion RAM size
switching register (IXS).
Flash memory
(self-programming
supported)
High-speed RAM
Expansion RAM
Timer outputs
Item
Note
Note
Note
Crystal/ceramic oscillation (X1), external main system clock input (EXCLK)
On-chip internal oscillation (8 MHz (TYP.): V
On-chip internal oscillation (240 kHz (TYP.))
Crystal oscillation (XT1), external subsystem clock input (EXCLKS)
(32.768 kHz: V
8 bits
0.1 s/0.2 s/0.4 s/0.8 s/1.6 s (high-speed system clock: @ f
0.25 s/0.5 s/1.0 s/2.0 s/4.0 s (TYP.) (internal oscillator clock: @ f
operation)
122 s (subsystem clock: when operating at f
• 16-bit operation
• Multiply/divide (16 bits
• Bit manipulate (set, reset, test, and Boolean operation)
• BCD adjust, etc.
Total :
CMOS I/O
N-ch open-drain I/O
• 16-bit timer/event counter: 5 channels
• 8-bit timer/event counter:
• Watch timer
• Watchdog timer:
12 (PWM output: 7)
• 78.125 kHz, 156.25 kHz, 312.5 kHz, 625 kHz, 1.25 MHz, 2.5 MHz, 5 MHz, 10 MHz
• 32.768 kHz (subsystem clock: 32.768 kHz)
1.22 kHz, 2.44 kHz, 4.88 kHz, 9.77 kHz (high-speed system clock: 10 MHz)
10-bit resolution
4 to 20 MHz: V
(high-speed system clock: 10 MHz)
32 registers (8 bits
Preliminary User’s Manual U19748EJ1V0UD
DD
DD
CHAPTER 1 OUTLINE
= 2.7 to 5.5 V)
PD78F0846
PD78F0847
= 4.0 to 5.5 V, 4 to 10 MHz: V
8 channels
16 bits, 32 bits
8 registers
63
61
2 channels
1 channel
1 channel
2 (5 V tolerant / N-ch open-drain output selectable)
32 K/60 K
4 banks)
288 bytes
16 bits)
DD
XT
1 K
2 K
= 2.7 to 5.5 V)
= 32.768 kHz)
DD
= 2.7 to 5.5 V
MAIN
PD78F0848
PD78F0849
= 20 MHz operation)
OSC8
= 8 MHz (TYP.)
(1/2)
37