EZ80F91MCU Datasheet, PDF (66/396 Pages) Zilog, Inc. – eZ80Acclaim-TM Flash Microcontrollers

eZ80F91 MCU
Product Specification
47
Table 3. Register Map (Continued)
Address
(hex) Mnemonic
Name
Reset
CPU Page
(hex) Access #
Universal Asynchronous Receiver/Transmitter 1 (UART1)
00D0 UART1_RBR
UART 1 Receive Buffer Register
XX
UART1_THR
UART 1 Transmit Holding Register
XX
UART1_BRG_L
UART 1 Baud Rate Generator
02
Register—Low Byte
00D1 UART1_IER
UART 1 Interrupt Enable Register
00
UART1_BRG_H
UART 1 Baud Rate Generator
00
Register—High Byte
00D2 UART1_IIR
UART 1 Interrupt Identification
01
Register
UART1_FCTL
UART 1 FIFO Control Register
00
00D3 UART1_LCTL
UART 1 Line Control Register
00
00D4 UART1_MCTL
UART 1 Modem Control Register
00
00D5 UART1_LSR
UART 1 Line Status Register
60
00D6 UART1_MSR
UART 1 Modem Status Register
XX
00D7 UART1_SPR
UART 1 Scratch Pad Register
00
Low-Power Control
00DB CLK_PPD1
Clock Peripheral Power-Down Register 00
1
00DC CLK_PPD2
Clock Peripheral Power-Down Register 00
2
R
192
W
191
R/W 190
R/W 192
R/W 190
R
193
W
195
R/W 196
R/W 198
R/W 200
R/W 202
R/W 203
R/W
56
R/W
57
Real-Time Clock
00E0 RTC_SEC
00E1 RTC_MIN
00E2 RTC_HRS
RTC Seconds Register
RTC Minutes Register
RTC Hours Register
XX
R/W³ 168
XX
R/W³ 169
XX
R/W³ 170
Notes:
1. After an external pin reset, the Watch-Dog Timer Control register is reset to 00h. After a Watch-Dog Timer time-
out reset, the Watch-Dog Timer Control register is reset to 20h.
2. When the CPU reads this register, the current sampled value of the port is read.
3. Read Only if RTC is locked; Read/Write if RTC is unlocked.
4. After an external pin reset or a Watch-Dog Timer reset, the RTC Control register is reset to x0xxxx00b. After a
an RTC Alarm sleep-mode recovery reset, the RTC Control register is reset to x0xxxx10b.
5. Read Only if Flash Memory is locked. Read/Write if Flash Memory is unlocked.
PS019209-0504
PRELIMINARY
Register Map