Panasonic KX-FT21BX Service Manual page 92

KX-FT21LA
IC3
SRAM
2 A0~A7
2 A8~A14
1~10, 21
11~13
23~26
15~19
1 D0~D7
20 RAMCS
22 RD
27 WR
IC2
ROM
3 A0~A7
4 A8~A16
2~12 13~15
23~29 17~21
- 66 -
1 D0~D7
24 RD
22 ROMCS