UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 190

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

Specifications of UPD78F9222MC(T)-5A4-A

• Controller Family/series: UPD78
• No. Of I/o's: 17
• Ram Memory Size: 256Byte
• Cpu Speed: 10MHz
• No. Of Timers: 4
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

(4) Clock selection register 6 (CKSR6)
190
Address: FF96H After reset: 00H R/W
Caution Make sure POWER6 = 0 when rewriting TPS63 to TPS60.
Remarks 1. Figures in parentheses are for operation with f
Symbol
CKSR6
This register selects the base clock of serial interface UART6.
CKSR6 can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Remark CKSR6 can be refreshed (the same value is written) by software during a communication operation
2. f
(when bit 7 (POWER6) and bit 6 (TXE6) of ASIM6 = 1 or bit 7 (POWER6) and bit 5 (RXE6) of ASIM6
= 1).
TPS63
XP
7
0
0
0
0
0
0
0
0
0
1
1
1
1
: Oscillation frequency of clock to peripheral hardware
Figure 11-8. Format of Clock Selection Register 6 (CKSR6)
TPS62
Other than above
6
0
0
0
0
0
1
1
1
1
0
0
0
0
CHAPTER 11 SERIAL INTERFACE UART6
TPS61
5
0
0
0
1
1
0
0
1
1
0
0
1
1
User’s Manual U16898EJ5V0UD
TPS60
4
0
0
1
0
1
0
1
0
1
0
1
0
1
XP
f
f
f
f
f
f
f
f
f
f
f
f
Setting prohibited
XP
XP
XP
XP
XP
XP
XP
XP
XP
XP
XP
XP
= 10 MHz
/2 (5 MHz)
/2
/2
/2
/2
/2
/2
/2
/2
/2
/2
TPS63
(10 MHz)
2
3
4
5
6
7
8
9
10
11
3
(2.5 MHz)
(1.25 MHz)
(625 kHz)
(312.5 kHz)
(156.25 kHz)
(78.13 kHz)
(39.06 kHz)
(19.53 kHz)
(9.77 kHz)
(4.89 kHz)
Base clock (f
TPS62
2
XCLK6
) selection
TPS61
1
TPS60
0