UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 558

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

Notes 1.
558
Program counter (PC)
Stack pointer (SP)
Program status word (PSW)
RAM
Port registers (P0, P1, P3 to P9, P12, P13) (output latches)
Port mode registers
Pull-up resistor option registers (PU0, PU1, PU3 to PU5, PU7, PU12, PU13)
Internal expansion RAM size switching register (IXS)
Internal memory size switching register (IMS)
Bank select register (BANK)
Processor clock control register (PCC)
Clock operation mode select register (OSCCTL)
Internal oscillator mode register (RCM)
Main clock mode register (MCM)
Main OSC control register (MOC)
Oscillation stabilization time select register (OSTS)
Oscillation stabilization time counter status register (OSTC)
16-bit timer/event
counters 00-03
2.
3.
4.
During reset signal generation or oscillation stabilization time wait, only the PC contents among the
hardware statuses become undefined. All other hardware statuses remain unchanged after reset.
When a reset is executed in the standby mode, the pre-reset status is held even after reset.
The initial values of the internal memory size switching register (IMS) and internal expansion RAM size
switching register (IXS) after a reset release are constant (IMS = CFH, IXS = 0CH) in all the 78K0/FE2
products, regardless of the internal memory capacity. Therefore, after a reset is released, be sure to set
the following values for each product.
The value of this register is 00H immediately after a reset release but automatically changes to 80H after
internal high-speed oscillation has been stabilized.
μ
μ
μ
μ
PD78F0887
PD78F0888
PD78F0889
PD78F0890
Flash Memory Version
Data memory
General-purpose registers
PM0, PM1, PM3 to PM9, PM12
PM13
Timer counters 00-03 (TM00-TM03)
Capture/compare registers 000-003, 010-013(CR000-CR003, CR010-CR013)
Mode control registers 00-03 (TMC00-TMC03)
Prescaler mode registers 00-03 (PRM00-PRM03)
Capture/compare control registers 00-03 (CRC00-CRC03)
Timer output control registers 00-03 (TOC00- TOC03)
Table 19-2. Hardware Statuses After Reset Acknowledgment (1/3)
(78K0/FE2)
CHAPTER 19 RESET FUNCTION
Hardware
CCH
CFH
CCH
CCH
User’s Manual U17554EJ4V0UD
IMS
08H
08H
04H
00H
IXS
The contents of the
reset vector table
(0000H, 0001H) are
set.
Undefined
02H
Undefined
Undefined
00H
FFH
FEH
00H
0CH
CFH
00H
01H
00H
00H
00H
80H
05H
00H
0000H
0000H
00H
00H
00H
00H
Acknowledgment
Note 4
Note 3
Note 3
After Reset
Note 2
Note 2
Note 1