UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 21

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

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1.1 Features
Part Number
PD78F0836
PD78F0837
PD78F0844
PD78F0845
78K0/DE2
Note The internal flash memory, internal high-speed RAM capacities, and internal expansion RAM capacities can
(64 pins)
General-purpose register: 8 bits
Internal CAN controller (for PD78F0844, 78F0845, 78F0846, 78F0847, 78F0848, and 78F0849 only)
Stepper motor controller/driver with zero point detection (ZPD):
2 channels (for 78K0/DE2) / 0 / 2 / 4 channels (for 78K0/DF2)
LCD controller/driver (seg
ROM, RAM capacities
On-chip single-power-supply flash memory
Self-programming (with boot swap function)
On-chip debug function
On-chip power-on-clear (POC) circuit and low-voltage detector (LVI)
Short startup is possible via the CPU default start using the on-chip internal high-speed oscillator
On-chip watchdog timer (operable with on-chip internal low-speed oscillator clock)
On-chip sound generator
On-chip multiplier/divider
On-chip clock output/buzzer output controller
I/O ports: 47 (for 78K0/DE2) / 63 (for 78K0/DF2) (N-ch open drain: 2)
Timer: 9 channels
Minimum instruction execution time can be changed from high speed (0.1
highspeed system clock) to ultra low-speed (114 s: @ 32.768 kHz operation with subsystem clock)
–
–
–
–
–
–
be changed using the internal memory size switching register (IMS) and the internal expansion RAM size
switching register (IXS).
PD78F0838
PD78F0839
PD78F0840
PD78F0841
PD78F0842
PD78F0843
PD78F0846
PD78F0847
PD78F0848
PD78F0849
78K0/DF2
(80 pins)
Item
[channel]
com): 24
CAN
–
1
32 registers (8 bits
Preliminary User’s Manual U19748EJ1V0UD
[channels]
Controller
Stepper
CHAPTER 1 OUTLINE
/driver
Motor
4 (for 78K0/DE2) / 28
0
2
4
2
4
78K0/DE2
24
24
controller/driver
–
–
–
(seg
4
4
8 registers
LCD
com)
78K0/DF2
40
32
28
32
28
4 / 32
4
4
4
4
4
4 banks)
4 / 40
Flash
memory
Note
Program
Memory
(ROM)
[KB]
4 (for 78K0/DF2)
s: @ 20 MHz operation with
24
48
24
48
24
48
32
60
32
60
1024
RAM
Internal
speed
High-
Data Memory
Note
[bytes]
Expansion
1024
2048
1024
2048
1024
2048
1024
2048
1024
2048
RAM
Internal
Note
19